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-rw-r--r--lib/libfetch/Makefile95
-rw-r--r--lib/libfetch/common.c752
-rw-r--r--lib/libfetch/common.h127
-rw-r--r--lib/libfetch/fetch.c437
-rw-r--r--lib/libfetch/fetch.h153
-rw-r--r--lib/libfetch/file.c145
-rw-r--r--lib/libfetch/ftp.c1179
-rw-r--r--lib/libfetch/ftp.errors47
-rw-r--r--lib/libfetch/http.c1225
-rw-r--r--lib/libfetch/http.errors45
10 files changed, 4205 insertions, 0 deletions
diff --git a/lib/libfetch/Makefile b/lib/libfetch/Makefile
new file mode 100644
index 00000000..631859bd
--- /dev/null
+++ b/lib/libfetch/Makefile
@@ -0,0 +1,95 @@
+prefix = /usr
+DESTDIR =
+DEBUG = true
+ENABLE_HTTPS = true
+
+CFLAGS = -O2 -pipe -I. -DINET6
+WARNINGS = -Wall -Wstrict-prototypes -Wsign-compare -Wchar-subscripts \
+ -Wpointer-arith -Wcast-align -Wsign-compare
+CFLAGS += $(WARNINGS)
+
+ifeq ($(strip $(DEBUG)), true)
+CFLAGS += -g
+else
+CFLAGS += -DNDEBUG
+endif
+
+ifeq ($(strip $(ENALE_HTTPS)),true)
+CFLAGS += -DWITH_SSL
+LDFLAGS += -lssl -lcrypto
+endif
+
+CC = gcc
+LD = gcc
+AR = ar
+RANLIB = ranlib
+INSTALL = install -c -D
+
+OBJS= fetch.o common.o ftp.o http.o file.o
+INCS= fetch.h common.h
+GEN = ftperr.h httperr.h
+MAN = fetch.3
+
+#pretty print!
+E = @echo
+Q = @
+
+all: libfetch.so libfetch.a
+ $(E) " built with: " $(CFLAGS)
+.PHONY: all
+
+%.o: %.c
+ $(E) " compile " $@
+ $(Q) $(CC) $(CFLAGS) -c $<
+
+ftperr.h: ftp.errors
+ $(E) " generate " $@
+ @echo "static struct fetcherr _ftp_errlist[] = {" > $@
+ @cat $< \
+ | grep -v ^# \
+ | sort \
+ | while read NUM CAT STRING; do \
+ echo " { $${NUM}, FETCH_$${CAT}, \"$${STRING}\" },"; \
+ done >> $@
+ @echo -e " { -1, FETCH_UNKNOWN, \"Unknown FTP error\" }\n};" >> $@
+
+httperr.h: http.errors
+ $(E) " generate " $@
+ @echo "static struct fetcherr _http_errlist[] = {" > $@
+ @cat $< \
+ | grep -v ^# \
+ | sort \
+ | while read NUM CAT STRING; do \
+ echo " { $${NUM}, FETCH_$${CAT}, \"$${STRING}\" },"; \
+ done >> $@
+ @echo -e " { -1, FETCH_UNKNOWN, \"Unknown HTTP error\" }\n};" >> $@
+
+libfetch.so: $(GEN) $(INCS) $(OBJS)
+ $(E) " build " $@
+ $(Q) rm -f $@
+ $(Q) $(LD) $(LDFLAGS) *.o -shared -o $@
+
+libfetch.a: $(GEN) $(INCS) $(OBJS)
+ $(E) " build " $@
+ $(Q) rm -f $@
+ $(Q) $(AR) rcs $@ *.o
+ $(Q) $(RANLIB) $@
+
+clean:
+ $(E) " clean "
+ $(Q) rm -f libfetch.so libfetch.a *.o $(GEN)
+.PHONY: clean
+
+install: all
+ $(Q) $(INSTALL) -m 755 libfetch.so $(DESTDIR)$(prefix)/lib/libfetch.so
+ $(Q) $(INSTALL) -m 644 libfetch.a $(DESTDIR)$(prefix)/lib/libfetch.a
+ $(Q) $(INSTALL) -m 644 fetch.h $(DESTDIR)$(prefix)/include/fetch.h
+ $(Q) $(INSTALL) -m 644 fetch.3 $(DESTDIR)$(prefix)/man/man3/fetch.3
+.PHONY: install
+
+uninstall:
+ $(Q) rm -f $(DESTDIR)$(prefix)/lib/libfetch.so
+ $(Q) rm -f $(DESTDIR)$(prefix)/lib/libfetch.a
+ $(Q) rm -f $(DESTDIR)$(prefix)/include/fetch.h
+ $(Q) rm -f $(DESTDIR)$(prefix)/man/man3/fetch.3
+.PHONY: uninstall
diff --git a/lib/libfetch/common.c b/lib/libfetch/common.c
new file mode 100644
index 00000000..92bfc687
--- /dev/null
+++ b/lib/libfetch/common.c
@@ -0,0 +1,752 @@
+/*-
+* Copyright (c) 1998-2004 Dag-Erling Coïdan Smørgrav
+* All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions
+* are met:
+* 1. Redistributions of source code must retain the above copyright
+* notice, this list of conditions and the following disclaimer
+* in this position and unchanged.
+* 2. Redistributions in binary form must reproduce the above copyright
+* notice, this list of conditions and the following disclaimer in the
+* documentation and/or other materials provided with the distribution.
+* 3. The name of the author may not be used to endorse or promote products
+* derived from this software without specific prior written permission
+*
+* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <sys/cdefs.h>
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <sys/uio.h>
+#include <netinet/in.h>
+
+#include <errno.h>
+#include <netdb.h>
+#include <pwd.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "fetch.h"
+#include "common.h"
+
+
+/*** Local data **************************************************************/
+
+/*
+* Error messages for resolver errors
+*/
+static struct fetcherr _netdb_errlist[] = {
+#ifdef EAI_NODATA
+{ EAI_NODATA, FETCH_RESOLV, "Host not found" },
+#endif
+{ EAI_AGAIN, FETCH_TEMP, "Transient resolver failure" },
+{ EAI_FAIL, FETCH_RESOLV, "Non-recoverable resolver failure" },
+{ EAI_NONAME, FETCH_RESOLV, "No address record" },
+{ -1, FETCH_UNKNOWN, "Unknown resolver error" }
+};
+
+/* End-of-Line */
+static const char ENDL[2] = "\r\n";
+
+
+/*** Error-reporting functions ***********************************************/
+
+/*
+* Map error code to string
+*/
+static struct fetcherr *
+_fetch_finderr(struct fetcherr *p, int e)
+{
+while (p->num != -1 && p->num != e)
+ p++;
+return (p);
+}
+
+/*
+* Set error code
+*/
+void
+_fetch_seterr(struct fetcherr *p, int e)
+{
+p = _fetch_finderr(p, e);
+fetchLastErrCode = p->cat;
+snprintf(fetchLastErrString, MAXERRSTRING, "%s", p->string);
+}
+
+/*
+* Set error code according to errno
+*/
+void
+_fetch_syserr(void)
+{
+switch (errno) {
+case 0:
+ fetchLastErrCode = FETCH_OK;
+ break;
+case EPERM:
+case EACCES:
+case EROFS:
+ fetchLastErrCode = FETCH_AUTH;
+ break;
+case ENOENT:
+case EISDIR: /* XXX */
+ fetchLastErrCode = FETCH_UNAVAIL;
+ break;
+case ENOMEM:
+ fetchLastErrCode = FETCH_MEMORY;
+ break;
+case EBUSY:
+case EAGAIN:
+ fetchLastErrCode = FETCH_TEMP;
+ break;
+case EEXIST:
+ fetchLastErrCode = FETCH_EXISTS;
+ break;
+case ENOSPC:
+ fetchLastErrCode = FETCH_FULL;
+ break;
+case EADDRINUSE:
+case EADDRNOTAVAIL:
+case ENETDOWN:
+case ENETUNREACH:
+case ENETRESET:
+case EHOSTUNREACH:
+ fetchLastErrCode = FETCH_NETWORK;
+ break;
+case ECONNABORTED:
+case ECONNRESET:
+ fetchLastErrCode = FETCH_ABORT;
+ break;
+case ETIMEDOUT:
+ fetchLastErrCode = FETCH_TIMEOUT;
+ break;
+case ECONNREFUSED:
+case EHOSTDOWN:
+ fetchLastErrCode = FETCH_DOWN;
+ break;
+default:
+ fetchLastErrCode = FETCH_UNKNOWN;
+}
+snprintf(fetchLastErrString, MAXERRSTRING, "%s", strerror(errno));
+}
+
+
+/*
+* Emit status message
+*/
+void
+_fetch_info(const char *fmt, ...)
+{
+va_list ap;
+
+va_start(ap, fmt);
+vfprintf(stderr, fmt, ap);
+va_end(ap);
+fputc('\n', stderr);
+}
+
+
+/*** Network-related utility functions ***************************************/
+
+/*
+* Return the default port for a scheme
+*/
+int
+_fetch_default_port(const char *scheme)
+{
+struct servent *se;
+
+if ((se = getservbyname(scheme, "tcp")) != NULL)
+ return (ntohs(se->s_port));
+if (strcasecmp(scheme, SCHEME_FTP) == 0)
+ return (FTP_DEFAULT_PORT);
+if (strcasecmp(scheme, SCHEME_HTTP) == 0)
+ return (HTTP_DEFAULT_PORT);
+return (0);
+}
+
+/*
+* Return the default proxy port for a scheme
+*/
+int
+_fetch_default_proxy_port(const char *scheme)
+{
+if (strcasecmp(scheme, SCHEME_FTP) == 0)
+ return (FTP_DEFAULT_PROXY_PORT);
+if (strcasecmp(scheme, SCHEME_HTTP) == 0)
+ return (HTTP_DEFAULT_PROXY_PORT);
+return (0);
+}
+
+
+/*
+* Create a connection for an existing descriptor.
+*/
+conn_t *
+_fetch_reopen(int sd)
+{
+conn_t *conn;
+
+/* allocate and fill connection structure */
+if ((conn = calloc(1, sizeof(*conn))) == NULL)
+ return (NULL);
+conn->sd = sd;
+++conn->ref;
+return (conn);
+}
+
+
+/*
+* Bump a connection's reference count.
+*/
+conn_t *
+_fetch_ref(conn_t *conn)
+{
+
+++conn->ref;
+return (conn);
+}
+
+
+/*
+* Bind a socket to a specific local address
+*/
+int
+_fetch_bind(int sd, int af, const char *addr)
+{
+struct addrinfo hints, *res, *res0;
+int err;
+
+memset(&hints, 0, sizeof(hints));
+hints.ai_family = af;
+hints.ai_socktype = SOCK_STREAM;
+hints.ai_protocol = 0;
+if ((err = getaddrinfo(addr, NULL, &hints, &res0)) != 0)
+ return (-1);
+for (res = res0; res; res = res->ai_next)
+ if (bind(sd, res->ai_addr, res->ai_addrlen) == 0)
+ return (0);
+return (-1);
+}
+
+
+/*
+* Establish a TCP connection to the specified port on the specified host.
+*/
+conn_t *
+_fetch_connect(const char *host, int port, int af, int verbose)
+{
+conn_t *conn;
+char pbuf[10];
+const char *bindaddr;
+struct addrinfo hints, *res, *res0;
+int sd, err;
+
+DEBUG(fprintf(stderr, "---> %s:%d\n", host, port));
+
+if (verbose)
+ _fetch_info("looking up %s", host);
+
+/* look up host name and set up socket address structure */
+snprintf(pbuf, sizeof(pbuf), "%d", port);
+memset(&hints, 0, sizeof(hints));
+hints.ai_family = af;
+hints.ai_socktype = SOCK_STREAM;
+hints.ai_protocol = 0;
+if ((err = getaddrinfo(host, pbuf, &hints, &res0)) != 0) {
+ _netdb_seterr(err);
+ return (NULL);
+}
+bindaddr = getenv("FETCH_BIND_ADDRESS");
+
+if (verbose)
+ _fetch_info("connecting to %s:%d", host, port);
+
+/* try to connect */
+for (sd = -1, res = res0; res; sd = -1, res = res->ai_next) {
+ if ((sd = socket(res->ai_family, res->ai_socktype,
+ res->ai_protocol)) == -1)
+ continue;
+ if (bindaddr != NULL && *bindaddr != '\0' &&
+ _fetch_bind(sd, res->ai_family, bindaddr) != 0) {
+ _fetch_info("failed to bind to '%s'", bindaddr);
+ close(sd);
+ continue;
+ }
+ if (connect(sd, res->ai_addr, res->ai_addrlen) == 0)
+ break;
+ close(sd);
+}
+freeaddrinfo(res0);
+if (sd == -1) {
+ _fetch_syserr();
+ return (NULL);
+}
+
+if ((conn = _fetch_reopen(sd)) == NULL) {
+ _fetch_syserr();
+ close(sd);
+}
+return (conn);
+}
+
+
+/*
+* Enable SSL on a connection.
+*/
+int
+_fetch_ssl(conn_t *conn, int verbose)
+{
+
+#ifdef WITH_SSL
+/* Init the SSL library and context */
+if (!SSL_library_init()){
+ fprintf(stderr, "SSL library init failed\n");
+ return (-1);
+}
+
+SSL_load_error_strings();
+
+conn->ssl_meth = SSLv23_client_method();
+conn->ssl_ctx = SSL_CTX_new(conn->ssl_meth);
+SSL_CTX_set_mode(conn->ssl_ctx, SSL_MODE_AUTO_RETRY);
+
+conn->ssl = SSL_new(conn->ssl_ctx);
+if (conn->ssl == NULL){
+ fprintf(stderr, "SSL context creation failed\n");
+ return (-1);
+}
+SSL_set_fd(conn->ssl, conn->sd);
+if (SSL_connect(conn->ssl) == -1){
+ ERR_print_errors_fp(stderr);
+ return (-1);
+}
+
+if (verbose) {
+ X509_NAME *name;
+ char *str;
+
+ fprintf(stderr, "SSL connection established using %s\n",
+ SSL_get_cipher(conn->ssl));
+ conn->ssl_cert = SSL_get_peer_certificate(conn->ssl);
+ name = X509_get_subject_name(conn->ssl_cert);
+ str = X509_NAME_oneline(name, 0, 0);
+ printf("Certificate subject: %s\n", str);
+ free(str);
+ name = X509_get_issuer_name(conn->ssl_cert);
+ str = X509_NAME_oneline(name, 0, 0);
+ printf("Certificate issuer: %s\n", str);
+ free(str);
+}
+
+return (0);
+#else
+(void)conn;
+(void)verbose;
+fprintf(stderr, "SSL support disabled\n");
+return (-1);
+#endif
+}
+
+
+/*
+* Read a character from a connection w/ timeout
+*/
+ssize_t
+_fetch_read(conn_t *conn, char *buf, size_t len)
+{
+struct timeval wait;
+fd_set readfds;
+ssize_t rlen, total;
+int r;
+
+if (fetchTimeout) {
+ FD_ZERO(&readfds);
+ /*
+ gettimeofday(&timeout, NULL);
+ timeout.tv_sec += fetchTimeout;
+ */
+}
+
+total = 0;
+while (len > 0) {
+ while (fetchTimeout && !FD_ISSET(conn->sd, &readfds)) {
+ FD_SET(conn->sd, &readfds);
+ /*gettimeofday(&now, NULL);
+ wait.tv_sec = timeout.tv_sec - now.tv_sec;
+ wait.tv_usec = timeout.tv_usec - now.tv_usec;
+ if (wait.tv_usec < 0) {
+ wait.tv_usec += 1000000;
+ wait.tv_sec--;
+ }
+ if (wait.tv_sec < 0) {
+ errno = ETIMEDOUT;
+ _fetch_syserr();
+ return (-1);
+ }
+ */
+ wait.tv_sec = fetchTimeout / 1000;
+ wait.tv_usec = (fetchTimeout % 1000) * 1000;
+ errno = 0;
+ r = select(conn->sd + 1, &readfds, NULL, NULL, &wait);
+ if (r == -1) {
+ if (errno == EINTR && fetchRestartCalls)
+ continue;
+ _fetch_syserr();
+ return (-1);
+ } else if (r == 0) {
+ errno = ETIMEDOUT;
+ _fetch_syserr();
+ return (-1);
+ }
+ }
+#ifdef WITH_SSL
+ if (conn->ssl != NULL)
+ rlen = SSL_read(conn->ssl, buf, len);
+ else
+#endif
+ rlen = read(conn->sd, buf, len);
+ if (rlen == 0)
+ break;
+ if (rlen < 0) {
+ if (errno == EINTR && fetchRestartCalls)
+ continue;
+ return (-1);
+ }
+ len -= rlen;
+ buf += rlen;
+ total += rlen;
+}
+return (total);
+}
+
+
+/*
+* Read a line of text from a connection w/ timeout
+*/
+#define MIN_BUF_SIZE 1024
+
+int
+_fetch_getln(conn_t *conn)
+{
+ char *tmp;
+ size_t tmpsize;
+ ssize_t len;
+ char c;
+
+ if (conn->buf == NULL) {
+ if ((conn->buf = malloc(MIN_BUF_SIZE)) == NULL) {
+ errno = ENOMEM;
+ return (-1);
+ }
+ conn->bufsize = MIN_BUF_SIZE;
+ }
+
+ conn->buf[0] = '\0';
+ conn->buflen = 0;
+
+ do {
+ len = _fetch_read(conn, &c, 1);
+ if (len == -1)
+ return (-1);
+ if (len == 0)
+ break;
+ conn->buf[conn->buflen++] = c;
+ if (conn->buflen == conn->bufsize) {
+ tmp = conn->buf;
+ tmpsize = conn->bufsize * 2 + 1;
+ if ((tmp = realloc(tmp, tmpsize)) == NULL) {
+ errno = ENOMEM;
+ return (-1);
+ }
+ conn->buf = tmp;
+ conn->bufsize = tmpsize;
+ }
+ } while (c != '\n');
+
+ conn->buf[conn->buflen] = '\0';
+ DEBUG(fprintf(stderr, "<<< %s", conn->buf));
+ return (0);
+}
+
+
+/*
+ * Write to a connection w/ timeout
+ */
+ssize_t
+_fetch_write(conn_t *conn, const char *buf, size_t len)
+{
+ struct iovec iov;
+
+ iov.iov_base = __DECONST(char *, buf);
+ iov.iov_len = len;
+ return _fetch_writev(conn, &iov, 1);
+}
+
+/*
+ * Write a vector to a connection w/ timeout
+ * Note: can modify the iovec.
+ */
+ssize_t
+_fetch_writev(conn_t *conn, struct iovec *iov, int iovcnt)
+{
+ struct timeval wait;
+ fd_set writefds;
+ ssize_t wlen, total;
+ int r;
+
+ if (fetchTimeout) {
+ FD_ZERO(&writefds);
+ /*
+ gettimeofday(&timeout, NULL);
+ timeout.tv_sec += fetchTimeout;
+ */
+ }
+
+ total = 0;
+ while (iovcnt > 0) {
+ while (fetchTimeout && !FD_ISSET(conn->sd, &writefds)) {
+ FD_SET(conn->sd, &writefds);
+ /*
+ gettimeofday(&now, NULL);
+ wait.tv_sec = timeout.tv_sec - now.tv_sec;
+ wait.tv_usec = timeout.tv_usec - now.tv_usec;
+ if (wait.tv_usec < 0) {
+ wait.tv_usec += 1000000;
+ wait.tv_sec--;
+ }
+ if (wait.tv_sec < 0) {
+ errno = ETIMEDOUT;
+ _fetch_syserr();
+ return (-1);
+ }
+ */
+ wait.tv_sec = fetchTimeout / 1000;
+ wait.tv_usec = (fetchTimeout % 1000) * 1000;
+ errno = 0;
+ r = select(conn->sd + 1, NULL, &writefds, NULL, &wait);
+ if (r == -1) {
+ if (errno == EINTR && fetchRestartCalls)
+ continue;
+ return (-1);
+ } else if (r == 0) {
+ errno = ETIMEDOUT;
+ _fetch_syserr();
+ return (-1);
+ }
+ }
+ errno = 0;
+#ifdef WITH_SSL
+ if (conn->ssl != NULL)
+ wlen = SSL_write(conn->ssl,
+ iov->iov_base, iov->iov_len);
+ else
+#endif
+ wlen = writev(conn->sd, iov, iovcnt);
+ if (wlen == 0) {
+ /* we consider a short write a failure */
+ errno = EPIPE;
+ _fetch_syserr();
+ return (-1);
+ }
+ if (wlen < 0) {
+ if (errno == EINTR && fetchRestartCalls)
+ continue;
+ return (-1);
+ }
+ total += wlen;
+ while (iovcnt > 0 && wlen >= (ssize_t)iov->iov_len) {
+ wlen -= iov->iov_len;
+ iov++;
+ iovcnt--;
+ }
+ if (iovcnt > 0) {
+ iov->iov_len -= wlen;
+ iov->iov_base = __DECONST(char *, iov->iov_base) + wlen;
+ }
+ }
+ return (total);
+}
+
+
+/*
+ * Write a line of text to a connection w/ timeout
+ */
+int
+_fetch_putln(conn_t *conn, const char *str, size_t len)
+{
+ struct iovec iov[2];
+ int ret;
+
+ DEBUG(fprintf(stderr, ">>> %s\n", str));
+ iov[0].iov_base = __DECONST(char *, str);
+ iov[0].iov_len = len;
+ iov[1].iov_base = __DECONST(char *, ENDL);
+ iov[1].iov_len = sizeof(ENDL);
+ if (len == 0)
+ ret = _fetch_writev(conn, &iov[1], 1);
+ else
+ ret = _fetch_writev(conn, iov, 2);
+ if (ret == -1)
+ return (-1);
+ return (0);
+}
+
+
+/*
+ * Close connection
+ */
+int
+_fetch_close(conn_t *conn)
+{
+ int ret;
+
+ if (--conn->ref > 0)
+ return (0);
+ ret = close(conn->sd);
+ free(conn->buf);
+ free(conn);
+ return (ret);
+}
+
+
+/*** Directory-related utility functions *************************************/
+
+int
+_fetch_add_entry(struct url_ent **p, int *size, int *len,
+ const char *name, struct url_stat *us)
+{
+ struct url_ent *tmp;
+
+ if (*p == NULL) {
+ *size = 0;
+ *len = 0;
+ }
+
+ if (*len >= *size - 1) {
+ tmp = realloc(*p, (*size * 2 + 1) * sizeof(**p));
+ if (tmp == NULL) {
+ errno = ENOMEM;
+ _fetch_syserr();
+ return (-1);
+ }
+ *size = (*size * 2 + 1);
+ *p = tmp;
+ }
+
+ tmp = *p + *len;
+ snprintf(tmp->name, PATH_MAX, "%s", name);
+ bcopy(us, &tmp->stat, sizeof(*us));
+
+ (*len)++;
+ (++tmp)->name[0] = 0;
+
+ return (0);
+}
+
+
+/*** Authentication-related utility functions ********************************/
+
+static const char *
+_fetch_read_word(FILE *f)
+{
+ static char word[1024];
+
+ if (fscanf(f, " %1024s ", word) != 1)
+ return (NULL);
+ return (word);
+}
+
+/*
+ * Get authentication data for a URL from .netrc
+ */
+int
+_fetch_netrc_auth(struct url *url)
+{
+ char fn[PATH_MAX];
+ const char *word;
+ char *p;
+ FILE *f;
+
+ if ((p = getenv("NETRC")) != NULL) {
+ if (snprintf(fn, sizeof(fn), "%s", p) >= (int)sizeof(fn)) {
+ _fetch_info("$NETRC specifies a file name "
+ "longer than PATH_MAX");
+ return (-1);
+ }
+ } else {
+ if ((p = getenv("HOME")) != NULL) {
+ struct passwd *pwd;
+
+ if ((pwd = getpwuid(getuid())) == NULL ||
+ (p = pwd->pw_dir) == NULL)
+ return (-1);
+ }
+ if (snprintf(fn, sizeof(fn), "%s/.netrc", p) >= (int)sizeof(fn))
+ return (-1);
+ }
+
+ if ((f = fopen(fn, "r")) == NULL)
+ return (-1);
+ while ((word = _fetch_read_word(f)) != NULL) {
+ if (strcmp(word, "default") == 0) {
+ DEBUG(_fetch_info("Using default .netrc settings"));
+ break;
+ }
+ if (strcmp(word, "machine") == 0 &&
+ (word = _fetch_read_word(f)) != NULL &&
+ strcasecmp(word, url->host) == 0) {
+ DEBUG(_fetch_info("Using .netrc settings for %s", word));
+ break;
+ }
+ }
+ if (word == NULL)
+ goto ferr;
+ while ((word = _fetch_read_word(f)) != NULL) {
+ if (strcmp(word, "login") == 0) {
+ if ((word = _fetch_read_word(f)) == NULL)
+ goto ferr;
+ if (snprintf(url->user, sizeof(url->user),
+ "%s", word) > (int)sizeof(url->user)) {
+ _fetch_info("login name in .netrc is too long");
+ url->user[0] = '\0';
+ }
+ } else if (strcmp(word, "password") == 0) {
+ if ((word = _fetch_read_word(f)) == NULL)
+ goto ferr;
+ if (snprintf(url->pwd, sizeof(url->pwd),
+ "%s", word) > (int)sizeof(url->pwd)) {
+ _fetch_info("password in .netrc is too long");
+ url->pwd[0] = '\0';
+ }
+ } else if (strcmp(word, "account") == 0) {
+ if ((word = _fetch_read_word(f)) == NULL)
+ goto ferr;
+ /* XXX not supported! */
+ } else {
+ break;
+ }
+ }
+ fclose(f);
+ return (0);
+ ferr:
+ fclose(f);
+ return (-1);
+}
diff --git a/lib/libfetch/common.h b/lib/libfetch/common.h
new file mode 100644
index 00000000..c2c15d70
--- /dev/null
+++ b/lib/libfetch/common.h
@@ -0,0 +1,127 @@
+/*-
+ * Copyright (c) 1998-2004 Dag-Erling Coïdan Smørgrav
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer
+ * in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD: /repoman/r/ncvs/src/lib/libfetch/common.h,v 1.28 2004/09/21 18:35:20 des Exp $
+ */
+
+#ifndef _COMMON_H_INCLUDED
+#define _COMMON_H_INCLUDED
+
+/* BSD seems to use this alot - we don't have it */
+#define __DECONST(type, v) (type)((uintptr_t)(void *)(v))
+
+#define FTP_DEFAULT_PORT 21
+#define HTTP_DEFAULT_PORT 80
+#define FTP_DEFAULT_PROXY_PORT 21
+#define HTTP_DEFAULT_PROXY_PORT 3128
+
+#ifdef WITH_SSL
+#include <openssl/crypto.h>
+#include <openssl/x509.h>
+#include <openssl/pem.h>
+#include <openssl/ssl.h>
+#include <openssl/err.h>
+#endif
+
+/* Connection */
+typedef struct fetchconn conn_t;
+struct fetchconn {
+ int sd; /* socket descriptor */
+ char *buf; /* buffer */
+ size_t bufsize; /* buffer size */
+ size_t buflen; /* length of buffer contents */
+ int err; /* last protocol reply code */
+#ifdef WITH_SSL
+ SSL *ssl; /* SSL handle */
+ SSL_CTX *ssl_ctx; /* SSL context */
+ X509 *ssl_cert; /* server certificate */
+ SSL_METHOD *ssl_meth; /* SSL method */
+#endif
+ int ref; /* reference count */
+};
+
+/* Structure used for error message lists */
+struct fetcherr {
+ const int num;
+ const int cat;
+ const char *string;
+};
+
+/* for _fetch_writev */
+struct iovec;
+
+void _fetch_seterr(struct fetcherr *, int);
+void _fetch_syserr(void);
+void _fetch_info(const char *, ...);
+int _fetch_default_port(const char *);
+int _fetch_default_proxy_port(const char *);
+int _fetch_bind(int, int, const char *);
+conn_t *_fetch_connect(const char *, int, int, int);
+conn_t *_fetch_reopen(int);
+conn_t *_fetch_ref(conn_t *);
+int _fetch_ssl(conn_t *, int);
+ssize_t _fetch_read(conn_t *, char *, size_t);
+int _fetch_getln(conn_t *);
+ssize_t _fetch_write(conn_t *, const char *, size_t);
+ssize_t _fetch_writev(conn_t *, struct iovec *, int);
+int _fetch_putln(conn_t *, const char *, size_t);
+int _fetch_close(conn_t *);
+int _fetch_add_entry(struct url_ent **, int *, int *,
+ const char *, struct url_stat *);
+int _fetch_netrc_auth(struct url *url);
+
+#define _ftp_seterr(n) _fetch_seterr(_ftp_errlist, n)
+#define _http_seterr(n) _fetch_seterr(_http_errlist, n)
+#define _netdb_seterr(n) _fetch_seterr(_netdb_errlist, n)
+#define _url_seterr(n) _fetch_seterr(_url_errlist, n)
+
+#ifndef NDEBUG
+#define DEBUG(x) do { if (fetchDebug) { x; } } while (0)
+#else
+#define DEBUG(x) do { } while (0)
+#endif
+
+/*
+ * I don't really like exporting _http_request() and _ftp_request(),
+ * but the HTTP and FTP code occasionally needs to cross-call
+ * eachother, and this saves me from adding a lot of special-case code
+ * to handle those cases.
+ *
+ * Note that _*_request() free purl, which is way ugly but saves us a
+ * whole lot of trouble.
+ */
+FILE *_http_request(struct url *, const char *,
+ struct url_stat *, struct url *, const char *);
+FILE *_ftp_request(struct url *, const char *,
+ struct url_stat *, struct url *, const char *);
+
+/*
+ * Check whether a particular flag is set
+ */
+#define CHECK_FLAG(x) (flags && strchr(flags, (x)))
+
+#endif
diff --git a/lib/libfetch/fetch.c b/lib/libfetch/fetch.c
new file mode 100644
index 00000000..07afec0f
--- /dev/null
+++ b/lib/libfetch/fetch.c
@@ -0,0 +1,437 @@
+/*-
+ * Copyright (c) 1998-2004 Dag-Erling Coïdan Smørgrav
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer
+ * in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+
+#include <sys/param.h>
+#include <sys/errno.h>
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "fetch.h"
+#include "common.h"
+
+auth_t fetchAuthMethod;
+int fetchLastErrCode;
+char fetchLastErrString[MAXERRSTRING];
+int fetchTimeout;
+int fetchRestartCalls = 1;
+int fetchDebug;
+
+
+/*** Local data **************************************************************/
+
+/*
+ * Error messages for parser errors
+ */
+#define URL_MALFORMED 1
+#define URL_BAD_SCHEME 2
+#define URL_BAD_PORT 3
+static struct fetcherr _url_errlist[] = {
+ { URL_MALFORMED, FETCH_URL, "Malformed URL" },
+ { URL_BAD_SCHEME, FETCH_URL, "Invalid URL scheme" },
+ { URL_BAD_PORT, FETCH_URL, "Invalid server port" },
+ { -1, FETCH_UNKNOWN, "Unknown parser error" }
+};
+
+
+/*** Public API **************************************************************/
+
+/*
+ * Select the appropriate protocol for the URL scheme, and return a
+ * read-only stream connected to the document referenced by the URL.
+ * Also fill out the struct url_stat.
+ */
+FILE *
+fetchXGet(struct url *URL, struct url_stat *us, const char *flags)
+{
+ int direct;
+
+ direct = CHECK_FLAG('d');
+ if (us != NULL) {
+ us->size = -1;
+ us->atime = us->mtime = 0;
+ }
+ if (strcasecmp(URL->scheme, SCHEME_FILE) == 0)
+ return (fetchXGetFile(URL, us, flags));
+ else if (strcasecmp(URL->scheme, SCHEME_FTP) == 0)
+ return (fetchXGetFTP(URL, us, flags));
+ else if (strcasecmp(URL->scheme, SCHEME_HTTP) == 0)
+ return (fetchXGetHTTP(URL, us, flags));
+ else if (strcasecmp(URL->scheme, SCHEME_HTTPS) == 0)
+ return (fetchXGetHTTP(URL, us, flags));
+ _url_seterr(URL_BAD_SCHEME);
+ return (NULL);
+}
+
+/*
+ * Select the appropriate protocol for the URL scheme, and return a
+ * read-only stream connected to the document referenced by the URL.
+ */
+FILE *
+fetchGet(struct url *URL, const char *flags)
+{
+ return (fetchXGet(URL, NULL, flags));
+}
+
+/*
+ * Select the appropriate protocol for the URL scheme, and return a
+ * write-only stream connected to the document referenced by the URL.
+ */
+FILE *
+fetchPut(struct url *URL, const char *flags)
+{
+ int direct;
+
+ direct = CHECK_FLAG('d');
+ if (strcasecmp(URL->scheme, SCHEME_FILE) == 0)
+ return (fetchPutFile(URL, flags));
+ else if (strcasecmp(URL->scheme, SCHEME_FTP) == 0)
+ return (fetchPutFTP(URL, flags));
+ else if (strcasecmp(URL->scheme, SCHEME_HTTP) == 0)
+ return (fetchPutHTTP(URL, flags));
+ else if (strcasecmp(URL->scheme, SCHEME_HTTPS) == 0)
+ return (fetchPutHTTP(URL, flags));
+ _url_seterr(URL_BAD_SCHEME);
+ return (NULL);
+}
+
+/*
+ * Select the appropriate protocol for the URL scheme, and return the
+ * size of the document referenced by the URL if it exists.
+ */
+int
+fetchStat(struct url *URL, struct url_stat *us, const char *flags)
+{
+ int direct;
+
+ direct = CHECK_FLAG('d');
+ if (us != NULL) {
+ us->size = -1;
+ us->atime = us->mtime = 0;
+ }
+ if (strcasecmp(URL->scheme, SCHEME_FILE) == 0)
+ return (fetchStatFile(URL, us, flags));
+ else if (strcasecmp(URL->scheme, SCHEME_FTP) == 0)
+ return (fetchStatFTP(URL, us, flags));
+ else if (strcasecmp(URL->scheme, SCHEME_HTTP) == 0)
+ return (fetchStatHTTP(URL, us, flags));
+ else if (strcasecmp(URL->scheme, SCHEME_HTTPS) == 0)
+ return (fetchStatHTTP(URL, us, flags));
+ _url_seterr(URL_BAD_SCHEME);
+ return (-1);
+}
+
+/*
+ * Select the appropriate protocol for the URL scheme, and return a
+ * list of files in the directory pointed to by the URL.
+ */
+struct url_ent *
+fetchList(struct url *URL, const char *flags)
+{
+ int direct;
+
+ direct = CHECK_FLAG('d');
+ if (strcasecmp(URL->scheme, SCHEME_FILE) == 0)
+ return (fetchListFile(URL, flags));
+ else if (strcasecmp(URL->scheme, SCHEME_FTP) == 0)
+ return (fetchListFTP(URL, flags));
+ else if (strcasecmp(URL->scheme, SCHEME_HTTP) == 0)
+ return (fetchListHTTP(URL, flags));
+ else if (strcasecmp(URL->scheme, SCHEME_HTTPS) == 0)
+ return (fetchListHTTP(URL, flags));
+ _url_seterr(URL_BAD_SCHEME);
+ return (NULL);
+}
+
+/*
+ * Attempt to parse the given URL; if successful, call fetchXGet().
+ */
+FILE *
+fetchXGetURL(const char *URL, struct url_stat *us, const char *flags)
+{
+ struct url *u;
+ FILE *f;
+
+ if ((u = fetchParseURL(URL)) == NULL)
+ return (NULL);
+
+ f = fetchXGet(u, us, flags);
+
+ fetchFreeURL(u);
+ return (f);
+}
+
+/*
+ * Attempt to parse the given URL; if successful, call fetchGet().
+ */
+FILE *
+fetchGetURL(const char *URL, const char *flags)
+{
+ return (fetchXGetURL(URL, NULL, flags));
+}
+
+/*
+ * Attempt to parse the given URL; if successful, call fetchPut().
+ */
+FILE *
+fetchPutURL(const char *URL, const char *flags)
+{
+ struct url *u;
+ FILE *f;
+
+ if ((u = fetchParseURL(URL)) == NULL)
+ return (NULL);
+
+ f = fetchPut(u, flags);
+
+ fetchFreeURL(u);
+ return (f);
+}
+
+/*
+ * Attempt to parse the given URL; if successful, call fetchStat().
+ */
+int
+fetchStatURL(const char *URL, struct url_stat *us, const char *flags)
+{
+ struct url *u;
+ int s;
+
+ if ((u = fetchParseURL(URL)) == NULL)
+ return (-1);
+
+ s = fetchStat(u, us, flags);
+
+ fetchFreeURL(u);
+ return (s);
+}
+
+/*
+ * Attempt to parse the given URL; if successful, call fetchList().
+ */
+struct url_ent *
+fetchListURL(const char *URL, const char *flags)
+{
+ struct url *u;
+ struct url_ent *ue;
+
+ if ((u = fetchParseURL(URL)) == NULL)
+ return (NULL);
+
+ ue = fetchList(u, flags);
+
+ fetchFreeURL(u);
+ return (ue);
+}
+
+/*
+ * Make a URL
+ */
+struct url *
+fetchMakeURL(const char *scheme, const char *host, int port, const char *doc,
+ const char *user, const char *pwd)
+{
+ struct url *u;
+
+ if (!scheme || (!host && !doc)) {
+ _url_seterr(URL_MALFORMED);
+ return (NULL);
+ }
+
+ if (port < 0 || port > 65535) {
+ _url_seterr(URL_BAD_PORT);
+ return (NULL);
+ }
+
+ /* allocate struct url */
+ if ((u = calloc(1, sizeof(*u))) == NULL) {
+ _fetch_syserr();
+ return (NULL);
+ }
+
+ if ((u->doc = strdup(doc ? doc : "/")) == NULL) {
+ _fetch_syserr();
+ free(u);
+ return (NULL);
+ }
+
+#define seturl(x) snprintf(u->x, sizeof(u->x), "%s", x)
+ seturl(scheme);
+ seturl(host);
+ seturl(user);
+ seturl(pwd);
+#undef seturl
+ u->port = port;
+
+ return (u);
+}
+
+/*
+ * Split an URL into components. URL syntax is:
+ * [method:/][/[user[:pwd]@]host[:port]/][document]
+ * This almost, but not quite, RFC1738 URL syntax.
+ */
+struct url *
+fetchParseURL(const char *URL)
+{
+ char *doc;
+ const char *p, *q;
+ struct url *u;
+ int i;
+
+ /* allocate struct url */
+ if ((u = calloc(1, sizeof(*u))) == NULL) {
+ _fetch_syserr();
+ return (NULL);
+ }
+
+ /* scheme name */
+ if ((p = strstr(URL, ":/"))) {
+ snprintf(u->scheme, URL_SCHEMELEN+1,
+ "%.*s", (int)(p - URL), URL);
+ URL = ++p;
+ /*
+ * Only one slash: no host, leave slash as part of document
+ * Two slashes: host follows, strip slashes
+ */
+ if (URL[1] == '/')
+ URL = (p += 2);
+ } else {
+ p = URL;
+ }
+ if (!*URL || *URL == '/' || *URL == '.' ||
+ (u->scheme[0] == '\0' &&
+ strchr(URL, '/') == NULL && strchr(URL, ':') == NULL))
+ goto nohost;
+
+ p = strpbrk(URL, "/@");
+ if (p && *p == '@') {
+ /* username */
+ for (q = URL, i = 0; (*q != ':') && (*q != '@'); q++)
+ if (i < URL_USERLEN)
+ u->user[i++] = *q;
+
+ /* password */
+ if (*q == ':')
+ for (q++, i = 0; (*q != ':') && (*q != '@'); q++)
+ if (i < URL_PWDLEN)
+ u->pwd[i++] = *q;
+
+ p++;
+ } else {
+ p = URL;
+ }
+
+ /* hostname */
+#ifdef INET6
+ if (*p == '[' && (q = strchr(p + 1, ']')) != NULL &&
+ (*++q == '\0' || *q == '/' || *q == ':')) {
+ if ((i = q - p - 2) > MAXHOSTNAMELEN)
+ i = MAXHOSTNAMELEN;
+ strncpy(u->host, ++p, i);
+ p = q;
+ } else
+#endif
+ for (i = 0; *p && (*p != '/') && (*p != ':'); p++)
+ if (i < MAXHOSTNAMELEN)
+ u->host[i++] = *p;
+
+ /* port */
+ if (*p == ':') {
+ for (q = ++p; *q && (*q != '/'); q++)
+ if (isdigit(*q))
+ u->port = u->port * 10 + (*q - '0');
+ else {
+ /* invalid port */
+ _url_seterr(URL_BAD_PORT);
+ goto ouch;
+ }
+ p = q;
+ }
+
+nohost:
+ /* document */
+ if (!*p)
+ p = "/";
+
+ if (strcasecmp(u->scheme, SCHEME_HTTP) == 0 ||
+ strcasecmp(u->scheme, SCHEME_HTTPS) == 0) {
+ const char hexnums[] = "0123456789abcdef";
+
+ /* percent-escape whitespace. */
+ if ((doc = malloc(strlen(p) * 3 + 1)) == NULL) {
+ _fetch_syserr();
+ goto ouch;
+ }
+ u->doc = doc;
+ while (*p != '\0') {
+ if (!isspace(*p)) {
+ *doc++ = *p++;
+ } else {
+ *doc++ = '%';
+ *doc++ = hexnums[((unsigned int)*p) >> 4];
+ *doc++ = hexnums[((unsigned int)*p) & 0xf];
+ p++;
+ }
+ }
+ *doc = '\0';
+ } else if ((u->doc = strdup(p)) == NULL) {
+ _fetch_syserr();
+ goto ouch;
+ }
+
+ DEBUG(fprintf(stderr,
+ "scheme: [%s]\n"
+ "user: [%s]\n"
+ "password: [%s]\n"
+ "host: [%s]\n"
+ "port: [%d]\n"
+ "document: [%s]\n",
+ u->scheme, u->user, u->pwd,
+ u->host, u->port, u->doc));
+
+ return (u);
+
+ouch:
+ free(u);
+ return (NULL);
+}
+
+/*
+ * Free a URL
+ */
+void
+fetchFreeURL(struct url *u)
+{
+ free(u->doc);
+ free(u);
+}
diff --git a/lib/libfetch/fetch.h b/lib/libfetch/fetch.h
new file mode 100644
index 00000000..9ade3631
--- /dev/null
+++ b/lib/libfetch/fetch.h
@@ -0,0 +1,153 @@
+/*-
+ * Copyright (c) 1998-2004 Dag-Erling Coïdan Smørgrav
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer
+ * in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD: /repoman/r/ncvs/src/lib/libfetch/fetch.h,v 1.26 2004/09/21 18:35:20 des Exp $
+ */
+
+#ifndef _FETCH_H_INCLUDED
+#define _FETCH_H_INCLUDED
+
+#include <stdio.h>
+#include <sys/param.h> /* MAXHOSTNAMELEN */
+
+#define _LIBFETCH_VER "libfetch/2.0"
+
+#define URL_SCHEMELEN 16
+#define URL_USERLEN 256
+#define URL_PWDLEN 256
+
+struct url {
+ char scheme[URL_SCHEMELEN+1];
+ char user[URL_USERLEN+1];
+ char pwd[URL_PWDLEN+1];
+ char host[MAXHOSTNAMELEN+1];
+ int port;
+ char *doc;
+ off_t offset;
+ size_t length;
+};
+
+struct url_stat {
+ off_t size;
+ time_t atime;
+ time_t mtime;
+};
+
+struct url_ent {
+ char name[PATH_MAX];
+ struct url_stat stat;
+};
+
+/* Recognized schemes */
+#define SCHEME_FTP "ftp"
+#define SCHEME_HTTP "http"
+#define SCHEME_HTTPS "https"
+#define SCHEME_FILE "file"
+
+/* Error codes */
+#define FETCH_ABORT 1
+#define FETCH_AUTH 2
+#define FETCH_DOWN 3
+#define FETCH_EXISTS 4
+#define FETCH_FULL 5
+#define FETCH_INFO 6
+#define FETCH_MEMORY 7
+#define FETCH_MOVED 8
+#define FETCH_NETWORK 9
+#define FETCH_OK 10
+#define FETCH_PROTO 11
+#define FETCH_RESOLV 12
+#define FETCH_SERVER 13
+#define FETCH_TEMP 14
+#define FETCH_TIMEOUT 15
+#define FETCH_UNAVAIL 16
+#define FETCH_UNKNOWN 17
+#define FETCH_URL 18
+#define FETCH_VERBOSE 19
+
+__BEGIN_DECLS
+
+/* FILE-specific functions */
+FILE *fetchXGetFile(struct url *, struct url_stat *, const char *);
+FILE *fetchGetFile(struct url *, const char *);
+FILE *fetchPutFile(struct url *, const char *);
+int fetchStatFile(struct url *, struct url_stat *, const char *);
+struct url_ent *fetchListFile(struct url *, const char *);
+
+/* HTTP-specific functions */
+FILE *fetchXGetHTTP(struct url *, struct url_stat *, const char *);
+FILE *fetchGetHTTP(struct url *, const char *);
+FILE *fetchPutHTTP(struct url *, const char *);
+int fetchStatHTTP(struct url *, struct url_stat *, const char *);
+struct url_ent *fetchListHTTP(struct url *, const char *);
+
+/* FTP-specific functions */
+FILE *fetchXGetFTP(struct url *, struct url_stat *, const char *);
+FILE *fetchGetFTP(struct url *, const char *);
+FILE *fetchPutFTP(struct url *, const char *);
+int fetchStatFTP(struct url *, struct url_stat *, const char *);
+struct url_ent *fetchListFTP(struct url *, const char *);
+
+/* Generic functions */
+FILE *fetchXGetURL(const char *, struct url_stat *, const char *);
+FILE *fetchGetURL(const char *, const char *);
+FILE *fetchPutURL(const char *, const char *);
+int fetchStatURL(const char *, struct url_stat *, const char *);
+struct url_ent *fetchListURL(const char *, const char *);
+FILE *fetchXGet(struct url *, struct url_stat *, const char *);
+FILE *fetchGet(struct url *, const char *);
+FILE *fetchPut(struct url *, const char *);
+int fetchStat(struct url *, struct url_stat *, const char *);
+struct url_ent *fetchList(struct url *, const char *);
+
+/* URL parsing */
+struct url *fetchMakeURL(const char *, const char *, int,
+ const char *, const char *, const char *);
+struct url *fetchParseURL(const char *);
+void fetchFreeURL(struct url *);
+
+__END_DECLS
+
+/* Authentication */
+typedef int (*auth_t)(struct url *);
+extern auth_t fetchAuthMethod;
+
+/* Last error code */
+extern int fetchLastErrCode;
+#define MAXERRSTRING 256
+extern char fetchLastErrString[MAXERRSTRING];
+
+/* I/O timeout */
+extern int fetchTimeout;
+
+/* Restart interrupted syscalls */
+extern int fetchRestartCalls;
+
+/* Extra verbosity */
+extern int fetchDebug;
+
+#endif
diff --git a/lib/libfetch/file.c b/lib/libfetch/file.c
new file mode 100644
index 00000000..ea7a0fdb
--- /dev/null
+++ b/lib/libfetch/file.c
@@ -0,0 +1,145 @@
+/*-
+ * Copyright (c) 1998-2004 Dag-Erling Coïdan Smørgrav
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer
+ * in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <dirent.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "fetch.h"
+#include "common.h"
+
+FILE *
+fetchXGetFile(struct url *u, struct url_stat *us, const char *flags)
+{
+ FILE *f;
+
+ if (us && fetchStatFile(u, us, flags) == -1)
+ return (NULL);
+
+ f = fopen(u->doc, "r");
+
+ if (f == NULL)
+ _fetch_syserr();
+
+ if (u->offset && fseeko(f, u->offset, SEEK_SET) == -1) {
+ fclose(f);
+ _fetch_syserr();
+ }
+
+ return (f);
+}
+
+FILE *
+fetchGetFile(struct url *u, const char *flags)
+{
+ return (fetchXGetFile(u, NULL, flags));
+}
+
+FILE *
+fetchPutFile(struct url *u, const char *flags)
+{
+ FILE *f;
+
+ if (CHECK_FLAG('a'))
+ f = fopen(u->doc, "a");
+ else
+ f = fopen(u->doc, "w+");
+
+ if (f == NULL)
+ _fetch_syserr();
+
+ if (u->offset && fseeko(f, u->offset, SEEK_SET) == -1) {
+ fclose(f);
+ _fetch_syserr();
+ }
+
+ return (f);
+}
+
+static int
+_fetch_stat_file(const char *fn, struct url_stat *us)
+{
+ struct stat sb;
+
+ us->size = -1;
+ us->atime = us->mtime = 0;
+ if (stat(fn, &sb) == -1) {
+ _fetch_syserr();
+ return (-1);
+ }
+ us->size = sb.st_size;
+ us->atime = sb.st_atime;
+ us->mtime = sb.st_mtime;
+ return (0);
+}
+
+int
+fetchStatFile(struct url *u, struct url_stat *us, const char *flags)
+{
+ return (_fetch_stat_file(u->doc, us));
+}
+
+struct url_ent *
+fetchListFile(struct url *u, const char *flags)
+{
+ struct dirent *de;
+ struct url_stat us;
+ struct url_ent *ue;
+ int size, len;
+ char fn[PATH_MAX], *p;
+ DIR *dir;
+ int l;
+
+ if ((dir = opendir(u->doc)) == NULL) {
+ _fetch_syserr();
+ return (NULL);
+ }
+
+ ue = NULL;
+ strncpy(fn, u->doc, sizeof(fn) - 2);
+ fn[sizeof(fn) - 2] = 0;
+ strcat(fn, "/");
+ p = strchr(fn, 0);
+ l = sizeof(fn) - strlen(fn) - 1;
+
+ while ((de = readdir(dir)) != NULL) {
+ strncpy(p, de->d_name, l - 1);
+ p[l - 1] = 0;
+ if (_fetch_stat_file(fn, &us) == -1)
+ /* should I return a partial result, or abort? */
+ break;
+ _fetch_add_entry(&ue, &size, &len, de->d_name, &us);
+ }
+
+ return (ue);
+}
diff --git a/lib/libfetch/ftp.c b/lib/libfetch/ftp.c
new file mode 100644
index 00000000..a28ec2db
--- /dev/null
+++ b/lib/libfetch/ftp.c
@@ -0,0 +1,1179 @@
+/*-
+ * Copyright (c) 1998-2004 Dag-Erling Coïdan Smørgrav
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer
+ * in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#define _GNU_SOURCE
+
+#include <sys/cdefs.h>
+
+/*
+ * Portions of this code were taken from or based on ftpio.c:
+ *
+ * ----------------------------------------------------------------------------
+ * "THE BEER-WARE LICENSE" (Revision 42):
+ * <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
+ * can do whatever you want with this stuff. If we meet some day, and you think
+ * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
+ * ----------------------------------------------------------------------------
+ *
+ * Major Changelog:
+ *
+ * Dag-Erling Coïdan Smørgrav
+ * 9 Jun 1998
+ *
+ * Incorporated into libfetch
+ *
+ * Jordan K. Hubbard
+ * 17 Jan 1996
+ *
+ * Turned inside out. Now returns xfers as new file ids, not as a special
+ * `state' of FTP_t
+ *
+ * $ftpioId: ftpio.c,v 1.30 1998/04/11 07:28:53 phk Exp $
+ *
+ */
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+#include <ctype.h>
+#include <libio.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <netdb.h>
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "fetch.h"
+#include "common.h"
+#include "ftperr.h"
+
+#define FTP_ANONYMOUS_USER "anonymous"
+
+#define FTP_CONNECTION_ALREADY_OPEN 125
+#define FTP_OPEN_DATA_CONNECTION 150
+#define FTP_OK 200
+#define FTP_FILE_STATUS 213
+#define FTP_SERVICE_READY 220
+#define FTP_TRANSFER_COMPLETE 226
+#define FTP_PASSIVE_MODE 227
+#define FTP_LPASSIVE_MODE 228
+#define FTP_EPASSIVE_MODE 229
+#define FTP_LOGGED_IN 230
+#define FTP_FILE_ACTION_OK 250
+#define FTP_DIRECTORY_CREATED 257 /* multiple meanings */
+#define FTP_FILE_CREATED 257 /* multiple meanings */
+#define FTP_WORKING_DIRECTORY 257 /* multiple meanings */
+#define FTP_NEED_PASSWORD 331
+#define FTP_NEED_ACCOUNT 332
+#define FTP_FILE_OK 350
+#define FTP_SYNTAX_ERROR 500
+#define FTP_PROTOCOL_ERROR 999
+
+static struct url cached_host;
+static conn_t *cached_connection;
+
+#define isftpreply(foo) (isdigit(foo[0]) && isdigit(foo[1]) \
+ && isdigit(foo[2]) \
+ && (foo[3] == ' ' || foo[3] == '\0'))
+#define isftpinfo(foo) (isdigit(foo[0]) && isdigit(foo[1]) \
+ && isdigit(foo[2]) && foo[3] == '-')
+
+/*
+ * Translate IPv4 mapped IPv6 address to IPv4 address
+ */
+static void
+unmappedaddr(struct sockaddr_in6 *sin6)
+{
+ struct sockaddr_in *sin4;
+ u_int32_t addr;
+ int port;
+
+ if (sin6->sin6_family != AF_INET6 ||
+ !IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr))
+ return;
+ sin4 = (struct sockaddr_in *)sin6;
+ addr = *(u_int32_t *)&sin6->sin6_addr.s6_addr[12];
+ port = sin6->sin6_port;
+ memset(sin4, 0, sizeof(struct sockaddr_in));
+ sin4->sin_addr.s_addr = addr;
+ sin4->sin_port = port;
+ sin4->sin_family = AF_INET;
+ //sin6->sin_len = sizeof(struct sockaddr_in);
+}
+
+/*
+ * Get server response
+ */
+static int
+_ftp_chkerr(conn_t *conn)
+{
+ if (_fetch_getln(conn) == -1) {
+ _fetch_syserr();
+ return (-1);
+ }
+ if (isftpinfo(conn->buf)) {
+ while (conn->buflen && !isftpreply(conn->buf)) {
+ if (_fetch_getln(conn) == -1) {
+ _fetch_syserr();
+ return (-1);
+ }
+ }
+ }
+
+ while (conn->buflen && isspace(conn->buf[conn->buflen - 1]))
+ conn->buflen--;
+ conn->buf[conn->buflen] = '\0';
+
+ if (!isftpreply(conn->buf)) {
+ _ftp_seterr(FTP_PROTOCOL_ERROR);
+ return (-1);
+ }
+
+ conn->err = (conn->buf[0] - '0') * 100
+ + (conn->buf[1] - '0') * 10
+ + (conn->buf[2] - '0');
+
+ return (conn->err);
+}
+
+/*
+ * Send a command and check reply
+ */
+static int
+_ftp_cmd(conn_t *conn, const char *fmt, ...)
+{
+ va_list ap;
+ size_t len;
+ char *msg;
+ int r;
+
+ va_start(ap, fmt);
+ len = vasprintf(&msg, fmt, ap);
+ va_end(ap);
+
+ if (msg == NULL) {
+ errno = ENOMEM;
+ _fetch_syserr();
+ return (-1);
+ }
+
+ r = _fetch_putln(conn, msg, len);
+ free(msg);
+
+ if (r == -1) {
+ _fetch_syserr();
+ return (-1);
+ }
+
+ return (_ftp_chkerr(conn));
+}
+
+/*
+ * Return a pointer to the filename part of a path
+ */
+static const char *
+_ftp_filename(const char *file, int *len, int *type)
+{
+ const char *s;
+
+ if ((s = strrchr(file, '/')) == NULL)
+ s = file;
+ else
+ s = s + 1;
+ *len = strlen(s);
+ if (*len > 7 && strncmp(s + *len - 7, ";type=", 6) == 0) {
+ *type = s[*len - 1];
+ *len -= 7;
+ } else {
+ *type = '\0';
+ }
+ return (s);
+}
+
+/*
+ * Get current working directory from the reply to a CWD, PWD or CDUP
+ * command.
+ */
+static int
+_ftp_pwd(conn_t *conn, char *pwd, size_t pwdlen)
+{
+ char *src, *dst, *end;
+ int q;
+
+ if (conn->err != FTP_WORKING_DIRECTORY &&
+ conn->err != FTP_FILE_ACTION_OK)
+ return (FTP_PROTOCOL_ERROR);
+ end = conn->buf + conn->buflen;
+ src = conn->buf + 4;
+ if (src >= end || *src++ != '"')
+ return (FTP_PROTOCOL_ERROR);
+ for (q = 0, dst = pwd; src < end && pwdlen--; ++src) {
+ if (!q && *src == '"')
+ q = 1;
+ else if (q && *src != '"')
+ break;
+ else if (q)
+ *dst++ = '"', q = 0;
+ else
+ *dst++ = *src;
+ }
+ if (!pwdlen)
+ return (FTP_PROTOCOL_ERROR);
+ *dst = '\0';
+#if 0
+ DEBUG(fprintf(stderr, "pwd: [%s]\n", pwd));
+#endif
+ return (FTP_OK);
+}
+
+/*
+ * Change working directory to the directory that contains the specified
+ * file.
+ */
+static int
+_ftp_cwd(conn_t *conn, const char *file)
+{
+ const char *beg, *end;
+ char pwd[PATH_MAX];
+ int e, i, len;
+
+ if ((end = strrchr(file, '/')) == NULL)
+ return (0);
+ if ((e = _ftp_cmd(conn, "PWD")) != FTP_WORKING_DIRECTORY ||
+ (e = _ftp_pwd(conn, pwd, sizeof(pwd))) != FTP_OK) {
+ _ftp_seterr(e);
+ return (-1);
+ }
+ for (;;) {
+ len = strlen(pwd);
+ /* look for a common prefix */
+ for (i = 0; i <= len && i <= end - file; ++i)
+ if (pwd[i] != file[i])
+ break;
+#if 0
+ DEBUG(fprintf(stderr, "have: [%.*s|%s]\n", i, pwd, pwd + i));
+ DEBUG(fprintf(stderr, "want: [%.*s|%s]\n", i, file, file + i));
+#endif
+ if (pwd[i] == '\0' && (file[i - 1] == '/' || file[i] == '/'))
+ break;
+ if ((e = _ftp_cmd(conn, "CDUP")) != FTP_FILE_ACTION_OK ||
+ (e = _ftp_cmd(conn, "PWD")) != FTP_WORKING_DIRECTORY ||
+ (e = _ftp_pwd(conn, pwd, sizeof(pwd))) != FTP_OK) {
+ _ftp_seterr(e);
+ return (-1);
+ }
+ }
+ for (beg = file + i; beg < end; beg = file + i + 1) {
+ while (*beg == '/')
+ ++beg, ++i;
+ for (++i; file + i < end && file[i] != '/'; ++i)
+ /* nothing */;
+ e = _ftp_cmd(conn, "CWD %.*s", file + i - beg, beg);
+ if (e != FTP_FILE_ACTION_OK) {
+ _ftp_seterr(e);
+ return (-1);
+ }
+ }
+ return (0);
+}
+
+/*
+ * Set transfer mode and data type
+ */
+static int
+_ftp_mode_type(conn_t *conn, int mode, int type)
+{
+ int e;
+
+ switch (mode) {
+ case 0:
+ case 's':
+ mode = 'S';
+ case 'S':
+ break;
+ default:
+ return (FTP_PROTOCOL_ERROR);
+ }
+ if ((e = _ftp_cmd(conn, "MODE %c", mode)) != FTP_OK) {
+ if (mode == 'S') {
+ /*
+ * Stream mode is supposed to be the default - so
+ * much so that some servers not only do not
+ * support any other mode, but do not support the
+ * MODE command at all.
+ *
+ * If "MODE S" fails, it is unlikely that we
+ * previously succeeded in setting a different
+ * mode. Therefore, we simply hope that the
+ * server is already in the correct mode, and
+ * silently ignore the failure.
+ */
+ } else {
+ return (e);
+ }
+ }
+
+ switch (type) {
+ case 0:
+ case 'i':
+ type = 'I';
+ case 'I':
+ break;
+ case 'a':
+ type = 'A';
+ case 'A':
+ break;
+ case 'd':
+ type = 'D';
+ case 'D':
+ /* can't handle yet */
+ default:
+ return (FTP_PROTOCOL_ERROR);
+ }
+ if ((e = _ftp_cmd(conn, "TYPE %c", type)) != FTP_OK)
+ return (e);
+
+ return (FTP_OK);
+}
+
+/*
+ * Request and parse file stats
+ */
+static int
+_ftp_stat(conn_t *conn, const char *file, struct url_stat *us)
+{
+ char *ln;
+ const char *filename;
+ int filenamelen, type;
+ struct tm tm;
+ time_t t;
+ int e;
+
+ us->size = -1;
+ us->atime = us->mtime = 0;
+
+ filename = _ftp_filename(file, &filenamelen, &type);
+
+ if ((e = _ftp_mode_type(conn, 0, type)) != FTP_OK) {
+ _ftp_seterr(e);
+ return (-1);
+ }
+
+ e = _ftp_cmd(conn, "SIZE %.*s", filenamelen, filename);
+ if (e != FTP_FILE_STATUS) {
+ _ftp_seterr(e);
+ return (-1);
+ }
+ for (ln = conn->buf + 4; *ln && isspace(*ln); ln++)
+ /* nothing */ ;
+ for (us->size = 0; *ln && isdigit(*ln); ln++)
+ us->size = us->size * 10 + *ln - '0';
+ if (*ln && !isspace(*ln)) {
+ _ftp_seterr(FTP_PROTOCOL_ERROR);
+ us->size = -1;
+ return (-1);
+ }
+ if (us->size == 0)
+ us->size = -1;
+ DEBUG(fprintf(stderr, "size: [%lld]\n", (long long)us->size));
+
+ e = _ftp_cmd(conn, "MDTM %.*s", filenamelen, filename);
+ if (e != FTP_FILE_STATUS) {
+ _ftp_seterr(e);
+ return (-1);
+ }
+ for (ln = conn->buf + 4; *ln && isspace(*ln); ln++)
+ /* nothing */ ;
+ switch (strspn(ln, "0123456789")) {
+ case 14:
+ break;
+ case 15:
+ ln++;
+ ln[0] = '2';
+ ln[1] = '0';
+ break;
+ default:
+ _ftp_seterr(FTP_PROTOCOL_ERROR);
+ return (-1);
+ }
+ if (sscanf(ln, "%04d%02d%02d%02d%02d%02d",
+ &tm.tm_year, &tm.tm_mon, &tm.tm_mday,
+ &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6) {
+ _ftp_seterr(FTP_PROTOCOL_ERROR);
+ return (-1);
+ }
+ tm.tm_mon--;
+ tm.tm_year -= 1900;
+ tm.tm_isdst = -1;
+ t = timegm(&tm);
+ if (t == (time_t)-1)
+ t = time(NULL);
+ us->mtime = t;
+ us->atime = t;
+ DEBUG(fprintf(stderr,
+ "last modified: [%04d-%02d-%02d %02d:%02d:%02d]\n",
+ tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
+ tm.tm_hour, tm.tm_min, tm.tm_sec));
+ return (0);
+}
+
+/*
+ * I/O functions for FTP
+ */
+struct ftpio {
+ conn_t *cconn; /* Control connection */
+ conn_t *dconn; /* Data connection */
+ int dir; /* Direction */
+ int eof; /* EOF reached */
+ int err; /* Error code */
+};
+
+static int _ftp_readfn(void *, char *, int);
+static int _ftp_writefn(void *, const char *, int);
+static fpos_t _ftp_seekfn(void *, fpos_t, int);
+static int _ftp_closefn(void *);
+
+static int
+_ftp_readfn(void *v, char *buf, int len)
+{
+ struct ftpio *io;
+ int r;
+
+ io = (struct ftpio *)v;
+ if (io == NULL) {
+ errno = EBADF;
+ return (-1);
+ }
+ if (io->cconn == NULL || io->dconn == NULL || io->dir == O_WRONLY) {
+ errno = EBADF;
+ return (-1);
+ }
+ if (io->err) {
+ errno = io->err;
+ return (-1);
+ }
+ if (io->eof)
+ return (0);
+ r = _fetch_read(io->dconn, buf, len);
+ if (r > 0)
+ return (r);
+ if (r == 0) {
+ io->eof = 1;
+ return (0);
+ }
+ if (errno != EINTR)
+ io->err = errno;
+ return (-1);
+}
+
+static int
+_ftp_writefn(void *v, const char *buf, int len)
+{
+ struct ftpio *io;
+ int w;
+
+ io = (struct ftpio *)v;
+ if (io == NULL) {
+ errno = EBADF;
+ return (-1);
+ }
+ if (io->cconn == NULL || io->dconn == NULL || io->dir == O_RDONLY) {
+ errno = EBADF;
+ return (-1);
+ }
+ if (io->err) {
+ errno = io->err;
+ return (-1);
+ }
+ w = _fetch_write(io->dconn, buf, len);
+ if (w >= 0)
+ return (w);
+ if (errno != EINTR)
+ io->err = errno;
+ return (-1);
+}
+
+static fpos_t
+_ftp_seekfn(void *v, fpos_t pos, int whence)
+{
+ fpos_t invalid = {0};
+ struct ftpio *io;
+
+ io = (struct ftpio *)v;
+ if (io == NULL) {
+ errno = EBADF;
+ return invalid;
+ }
+ errno = ESPIPE;
+ return invalid;
+}
+
+static int
+_ftp_closefn(void *v)
+{
+ struct ftpio *io;
+ int r;
+
+ io = (struct ftpio *)v;
+ if (io == NULL) {
+ errno = EBADF;
+ return (-1);
+ }
+ if (io->dir == -1)
+ return (0);
+ if (io->cconn == NULL || io->dconn == NULL) {
+ errno = EBADF;
+ return (-1);
+ }
+ _fetch_close(io->dconn);
+ io->dir = -1;
+ io->dconn = NULL;
+ DEBUG(fprintf(stderr, "Waiting for final status\n"));
+ r = _ftp_chkerr(io->cconn);
+ if (io->cconn == cached_connection && io->cconn->ref == 1)
+ cached_connection = NULL;
+ _fetch_close(io->cconn);
+ free(io);
+ return (r == FTP_TRANSFER_COMPLETE) ? 0 : -1;
+}
+
+static FILE *
+_ftp_setup(conn_t *cconn, conn_t *dconn, int mode)
+{
+ struct ftpio *io;
+ FILE *f;
+
+ if (cconn == NULL || dconn == NULL)
+ return (NULL);
+ if ((io = malloc(sizeof(*io))) == NULL)
+ return (NULL);
+ io->cconn = cconn;
+ io->dconn = dconn;
+ io->dir = mode;
+ io->eof = io->err = 0;
+ cookie_io_functions_t cookies;
+ cookies.read = (cookie_read_function_t *)_ftp_readfn;
+ cookies.write = (cookie_write_function_t *)_ftp_writefn;
+ cookies.seek = (cookie_seek_function_t *)_ftp_seekfn;
+ cookies.close = (cookie_close_function_t *)_ftp_closefn;
+ f = fopencookie(io, "rw", cookies);
+ if (f == NULL)
+ free(io);
+ return (f);
+}
+
+/*
+ * Transfer file
+ */
+static FILE *
+_ftp_transfer(conn_t *conn, const char *oper, const char *file,
+ int mode, off_t offset, const char *flags)
+{
+ struct sockaddr_storage sa;
+ struct sockaddr_in6 *sin6;
+ struct sockaddr_in *sin4;
+ const char *bindaddr;
+ const char *filename;
+ int filenamelen, type;
+ int low, pasv, verbose;
+ int e, sd = -1;
+ socklen_t l;
+ char *s;
+ FILE *df;
+
+ /* check flags */
+ low = CHECK_FLAG('l');
+ pasv = CHECK_FLAG('p');
+ verbose = CHECK_FLAG('v');
+
+ /* passive mode */
+ if (!pasv)
+ pasv = ((s = getenv("FTP_PASSIVE_MODE")) != NULL &&
+ strncasecmp(s, "no", 2) != 0);
+
+ /* isolate filename */
+ filename = _ftp_filename(file, &filenamelen, &type);
+
+ /* set transfer mode and data type */
+ if ((e = _ftp_mode_type(conn, 0, type)) != FTP_OK)
+ goto ouch;
+
+ /* find our own address, bind, and listen */
+ l = sizeof(sa);
+ if (getsockname(conn->sd, (struct sockaddr *)&sa, &l) == -1)
+ goto sysouch;
+ if (sa.ss_family == AF_INET6)
+ unmappedaddr((struct sockaddr_in6 *)&sa);
+
+ /* open data socket */
+ if ((sd = socket(sa.ss_family, SOCK_STREAM, IPPROTO_TCP)) == -1) {
+ _fetch_syserr();
+ return (NULL);
+ }
+
+ if (pasv) {
+ u_char addr[64];
+ char *ln, *p;
+ unsigned int i;
+ int port;
+
+ /* send PASV command */
+ if (verbose)
+ _fetch_info("setting passive mode");
+ switch (sa.ss_family) {
+ case AF_INET:
+ if ((e = _ftp_cmd(conn, "PASV")) != FTP_PASSIVE_MODE)
+ goto ouch;
+ break;
+ case AF_INET6:
+ if ((e = _ftp_cmd(conn, "EPSV")) != FTP_EPASSIVE_MODE) {
+ if (e == -1)
+ goto ouch;
+ if ((e = _ftp_cmd(conn, "LPSV")) !=
+ FTP_LPASSIVE_MODE)
+ goto ouch;
+ }
+ break;
+ default:
+ e = FTP_PROTOCOL_ERROR; /* XXX: error code should be prepared */
+ goto ouch;
+ }
+
+ /*
+ * Find address and port number. The reply to the PASV command
+ * is IMHO the one and only weak point in the FTP protocol.
+ */
+ ln = conn->buf;
+ switch (e) {
+ case FTP_PASSIVE_MODE:
+ case FTP_LPASSIVE_MODE:
+ for (p = ln + 3; *p && !isdigit(*p); p++)
+ /* nothing */ ;
+ if (!*p) {
+ e = FTP_PROTOCOL_ERROR;
+ goto ouch;
+ }
+ l = (e == FTP_PASSIVE_MODE ? 6 : 21);
+ for (i = 0; *p && i < l; i++, p++)
+ addr[i] = strtol(p, &p, 10);
+ if (i < l) {
+ e = FTP_PROTOCOL_ERROR;
+ goto ouch;
+ }
+ break;
+ case FTP_EPASSIVE_MODE:
+ for (p = ln + 3; *p && *p != '('; p++)
+ /* nothing */ ;
+ if (!*p) {
+ e = FTP_PROTOCOL_ERROR;
+ goto ouch;
+ }
+ ++p;
+ if (sscanf(p, "%c%c%c%d%c", &addr[0], &addr[1], &addr[2],
+ &port, &addr[3]) != 5 ||
+ addr[0] != addr[1] ||
+ addr[0] != addr[2] || addr[0] != addr[3]) {
+ e = FTP_PROTOCOL_ERROR;
+ goto ouch;
+ }
+ break;
+ }
+
+ /* seek to required offset */
+ if (offset)
+ if (_ftp_cmd(conn, "REST %lu", (u_long)offset) != FTP_FILE_OK)
+ goto sysouch;
+
+ /* construct sockaddr for data socket */
+ l = sizeof(sa);
+ if (getpeername(conn->sd, (struct sockaddr *)&sa, &l) == -1)
+ goto sysouch;
+ if (sa.ss_family == AF_INET6)
+ unmappedaddr((struct sockaddr_in6 *)&sa);
+ switch (sa.ss_family) {
+ case AF_INET6:
+ sin6 = (struct sockaddr_in6 *)&sa;
+ if (e == FTP_EPASSIVE_MODE)
+ sin6->sin6_port = htons(port);
+ else {
+ bcopy(addr + 2, (char *)&sin6->sin6_addr, 16);
+ bcopy(addr + 19, (char *)&sin6->sin6_port, 2);
+ }
+ break;
+ case AF_INET:
+ sin4 = (struct sockaddr_in *)&sa;
+ if (e == FTP_EPASSIVE_MODE)
+ sin4->sin_port = htons(port);
+ else {
+ bcopy(addr, (char *)&sin4->sin_addr, 4);
+ bcopy(addr + 4, (char *)&sin4->sin_port, 2);
+ }
+ break;
+ default:
+ e = FTP_PROTOCOL_ERROR; /* XXX: error code should be prepared */
+ break;
+ }
+
+ /* connect to data port */
+ if (verbose)
+ _fetch_info("opening data connection");
+ bindaddr = getenv("FETCH_BIND_ADDRESS");
+ if (bindaddr != NULL && *bindaddr != '\0' &&
+ _fetch_bind(sd, sa.ss_family, bindaddr) != 0)
+ goto sysouch;
+ if (connect(sd, (struct sockaddr *)&sa, sizeof(struct sockaddr_storage)) == -1)
+ goto sysouch;
+
+ /* make the server initiate the transfer */
+ if (verbose)
+ _fetch_info("initiating transfer");
+ e = _ftp_cmd(conn, "%s %.*s", oper, filenamelen, filename);
+ if (e != FTP_CONNECTION_ALREADY_OPEN && e != FTP_OPEN_DATA_CONNECTION)
+ goto ouch;
+
+ } else {
+ u_int32_t a;
+ u_short p;
+ int d;
+#ifdef IPV6_PORTRANGE
+ int arg;
+#endif
+ char *ap;
+ char hname[INET6_ADDRSTRLEN];
+
+ switch (sa.ss_family) {
+ case AF_INET6:
+ ((struct sockaddr_in6 *)&sa)->sin6_port = 0;
+#ifdef IPV6_PORTRANGE
+ arg = low ? IPV6_PORTRANGE_DEFAULT : IPV6_PORTRANGE_HIGH;
+ if (setsockopt(sd, IPPROTO_IPV6, IPV6_PORTRANGE,
+ (char *)&arg, sizeof(arg)) == -1)
+ goto sysouch;
+#endif
+ break;
+ case AF_INET:
+ ((struct sockaddr_in *)&sa)->sin_port = 0;
+#ifdef IP_PORTRANGE
+ arg = low ? IP_PORTRANGE_DEFAULT : IP_PORTRANGE_HIGH;
+ if (setsockopt(sd, IPPROTO_IP, IP_PORTRANGE,
+ (char *)&arg, sizeof(arg)) == -1)
+ goto sysouch;
+#endif
+ break;
+ }
+ if (verbose)
+ _fetch_info("binding data socket");
+ if (bind(sd, (struct sockaddr *)&sa, sizeof(struct sockaddr_storage)) == -1)
+ goto sysouch;
+ if (listen(sd, 1) == -1)
+ goto sysouch;
+
+ /* find what port we're on and tell the server */
+ if (getsockname(sd, (struct sockaddr *)&sa, &l) == -1)
+ goto sysouch;
+ switch (sa.ss_family) {
+ case AF_INET:
+ sin4 = (struct sockaddr_in *)&sa;
+ a = ntohl(sin4->sin_addr.s_addr);
+ p = ntohs(sin4->sin_port);
+ e = _ftp_cmd(conn, "PORT %d,%d,%d,%d,%d,%d",
+ (a >> 24) & 0xff, (a >> 16) & 0xff,
+ (a >> 8) & 0xff, a & 0xff,
+ (p >> 8) & 0xff, p & 0xff);
+ break;
+ case AF_INET6:
+#define UC(b) (((int)b)&0xff)
+ e = -1;
+ sin6 = (struct sockaddr_in6 *)&sa;
+ sin6->sin6_scope_id = 0;
+ if (getnameinfo((struct sockaddr *)&sa,sizeof(struct sockaddr_storage),
+ hname, sizeof(hname),
+ NULL, 0, NI_NUMERICHOST) == 0) {
+ e = _ftp_cmd(conn, "EPRT |%d|%s|%d|", 2, hname,
+ htons(sin6->sin6_port));
+ if (e == -1)
+ goto ouch;
+ }
+ if (e != FTP_OK) {
+ ap = (char *)&sin6->sin6_addr;
+ e = _ftp_cmd(conn,
+ "LPRT %d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d",
+ 6, 16,
+ UC(ap[0]), UC(ap[1]), UC(ap[2]), UC(ap[3]),
+ UC(ap[4]), UC(ap[5]), UC(ap[6]), UC(ap[7]),
+ UC(ap[8]), UC(ap[9]), UC(ap[10]), UC(ap[11]),
+ UC(ap[12]), UC(ap[13]), UC(ap[14]), UC(ap[15]),
+ 2,
+ (ntohs(sin6->sin6_port) >> 8) & 0xff,
+ ntohs(sin6->sin6_port) & 0xff);
+ }
+ break;
+ default:
+ e = FTP_PROTOCOL_ERROR; /* XXX: error code should be prepared */
+ goto ouch;
+ }
+ if (e != FTP_OK)
+ goto ouch;
+
+ /* seek to required offset */
+ if (offset)
+ if (_ftp_cmd(conn, "REST %ju", (uintmax_t)offset) != FTP_FILE_OK)
+ goto sysouch;
+
+ /* make the server initiate the transfer */
+ if (verbose)
+ _fetch_info("initiating transfer");
+ e = _ftp_cmd(conn, "%s %.*s", oper, filenamelen, filename);
+ if (e != FTP_CONNECTION_ALREADY_OPEN && e != FTP_OPEN_DATA_CONNECTION)
+ goto ouch;
+
+ /* accept the incoming connection and go to town */
+ if ((d = accept(sd, NULL, NULL)) == -1)
+ goto sysouch;
+ close(sd);
+ sd = d;
+ }
+
+ if ((df = _ftp_setup(conn, _fetch_reopen(sd), mode)) == NULL)
+ goto sysouch;
+ return (df);
+
+sysouch:
+ _fetch_syserr();
+ if (sd >= 0)
+ close(sd);
+ return (NULL);
+
+ouch:
+ if (e != -1)
+ _ftp_seterr(e);
+ if (sd >= 0)
+ close(sd);
+ return (NULL);
+}
+
+/*
+ * Authenticate
+ */
+static int
+_ftp_authenticate(conn_t *conn, struct url *url, struct url *purl)
+{
+ const char *user, *pwd, *logname;
+ char pbuf[MAXHOSTNAMELEN + MAXPATHLEN + 1];
+ int e, len;
+
+ /* XXX FTP_AUTH, and maybe .netrc */
+
+ /* send user name and password */
+ if (url->user[0] == '\0')
+ _fetch_netrc_auth(url);
+ user = url->user;
+ if (*user == '\0')
+ user = getenv("FTP_LOGIN");
+ if (user == NULL || *user == '\0')
+ user = FTP_ANONYMOUS_USER;
+ if (purl && url->port == _fetch_default_port(url->scheme))
+ e = _ftp_cmd(conn, "USER %s@%s", user, url->host);
+ else if (purl)
+ e = _ftp_cmd(conn, "USER %s@%s@%d", user, url->host, url->port);
+ else
+ e = _ftp_cmd(conn, "USER %s", user);
+
+ /* did the server request a password? */
+ if (e == FTP_NEED_PASSWORD) {
+ pwd = url->pwd;
+ if (*pwd == '\0')
+ pwd = getenv("FTP_PASSWORD");
+ if (pwd == NULL || *pwd == '\0') {
+ if ((logname = getlogin()) == 0)
+ logname = FTP_ANONYMOUS_USER;
+ if ((len = snprintf(pbuf, MAXPATHLEN + 1, "%s@", logname)) < 0)
+ len = 0;
+ else if (len > MAXPATHLEN)
+ len = MAXPATHLEN;
+ gethostname(pbuf + len, sizeof(pbuf) - len);
+ pwd = pbuf;
+ }
+ e = _ftp_cmd(conn, "PASS %s", pwd);
+ }
+
+ return (e);
+}
+
+/*
+ * Log on to FTP server
+ */
+static conn_t *
+_ftp_connect(struct url *url, struct url *purl, const char *flags)
+{
+ conn_t *conn;
+ int e, direct, verbose;
+#ifdef INET6
+ int af = AF_UNSPEC;
+#else
+ int af = AF_INET;
+#endif
+
+ direct = CHECK_FLAG('d');
+ verbose = CHECK_FLAG('v');
+ if (CHECK_FLAG('4'))
+ af = AF_INET;
+ else if (CHECK_FLAG('6'))
+ af = AF_INET6;
+
+ if (direct)
+ purl = NULL;
+
+ /* check for proxy */
+ if (purl) {
+ /* XXX proxy authentication! */
+ conn = _fetch_connect(purl->host, purl->port, af, verbose);
+ } else {
+ /* no proxy, go straight to target */
+ conn = _fetch_connect(url->host, url->port, af, verbose);
+ purl = NULL;
+ }
+
+ /* check connection */
+ if (conn == NULL)
+ /* _fetch_connect() has already set an error code */
+ return (NULL);
+
+ /* expect welcome message */
+ if ((e = _ftp_chkerr(conn)) != FTP_SERVICE_READY)
+ goto fouch;
+
+ /* authenticate */
+ if ((e = _ftp_authenticate(conn, url, purl)) != FTP_LOGGED_IN)
+ goto fouch;
+
+ /* done */
+ return (conn);
+
+fouch:
+ if (e != -1)
+ _ftp_seterr(e);
+ _fetch_close(conn);
+ return (NULL);
+}
+
+/*
+ * Disconnect from server
+ */
+static void
+_ftp_disconnect(conn_t *conn)
+{
+ (void)_ftp_cmd(conn, "QUIT");
+ if (conn == cached_connection && conn->ref == 1)
+ cached_connection = NULL;
+ _fetch_close(conn);
+}
+
+/*
+ * Check if we're already connected
+ */
+static int
+_ftp_isconnected(struct url *url)
+{
+ return (cached_connection
+ && (strcmp(url->host, cached_host.host) == 0)
+ && (strcmp(url->user, cached_host.user) == 0)
+ && (strcmp(url->pwd, cached_host.pwd) == 0)
+ && (url->port == cached_host.port));
+}
+
+/*
+ * Check the cache, reconnect if no luck
+ */
+static conn_t *
+_ftp_cached_connect(struct url *url, struct url *purl, const char *flags)
+{
+ conn_t *conn;
+ int e;
+
+ /* set default port */
+ if (!url->port)
+ url->port = _fetch_default_port(url->scheme);
+
+ /* try to use previously cached connection */
+ if (_ftp_isconnected(url)) {
+ e = _ftp_cmd(cached_connection, "NOOP");
+ if (e == FTP_OK || e == FTP_SYNTAX_ERROR)
+ return (_fetch_ref(cached_connection));
+ }
+
+ /* connect to server */
+ if ((conn = _ftp_connect(url, purl, flags)) == NULL)
+ return (NULL);
+ if (cached_connection)
+ _ftp_disconnect(cached_connection);
+ cached_connection = _fetch_ref(conn);
+ memcpy(&cached_host, url, sizeof(*url));
+ return (conn);
+}
+
+/*
+ * Check the proxy settings
+ */
+static struct url *
+_ftp_get_proxy(const char *flags)
+{
+ struct url *purl;
+ char *p;
+
+ if (flags != NULL && strchr(flags, 'd') != NULL)
+ return (NULL);
+ if (((p = getenv("FTP_PROXY")) || (p = getenv("ftp_proxy")) ||
+ (p = getenv("HTTP_PROXY")) || (p = getenv("http_proxy"))) &&
+ *p && (purl = fetchParseURL(p)) != NULL) {
+ if (!*purl->scheme) {
+ if (getenv("FTP_PROXY") || getenv("ftp_proxy"))
+ strcpy(purl->scheme, SCHEME_FTP);
+ else
+ strcpy(purl->scheme, SCHEME_HTTP);
+ }
+ if (!purl->port)
+ purl->port = _fetch_default_proxy_port(purl->scheme);
+ if (strcasecmp(purl->scheme, SCHEME_FTP) == 0 ||
+ strcasecmp(purl->scheme, SCHEME_HTTP) == 0)
+ return (purl);
+ fetchFreeURL(purl);
+ }
+ return (NULL);
+}
+
+/*
+ * Process an FTP request
+ */
+FILE *
+_ftp_request(struct url *url, const char *op, struct url_stat *us,
+ struct url *purl, const char *flags)
+{
+ conn_t *conn;
+ int oflag;
+
+ /* check if we should use HTTP instead */
+ if (purl && strcasecmp(purl->scheme, SCHEME_HTTP) == 0) {
+ if (strcmp(op, "STAT") == 0)
+ return (_http_request(url, "HEAD", us, purl, flags));
+ else if (strcmp(op, "RETR") == 0)
+ return (_http_request(url, "GET", us, purl, flags));
+ /*
+ * Our HTTP code doesn't support PUT requests yet, so try
+ * a direct connection.
+ */
+ }
+
+ /* connect to server */
+ conn = _ftp_cached_connect(url, purl, flags);
+ if (purl)
+ fetchFreeURL(purl);
+ if (conn == NULL)
+ return (NULL);
+
+ /* change directory */
+ if (_ftp_cwd(conn, url->doc) == -1)
+ return (NULL);
+
+ /* stat file */
+ if (us && _ftp_stat(conn, url->doc, us) == -1
+ && fetchLastErrCode != FETCH_PROTO
+ && fetchLastErrCode != FETCH_UNAVAIL)
+ return (NULL);
+
+ /* just a stat */
+ if (strcmp(op, "STAT") == 0)
+ return (FILE *)1; /* bogus return value */
+ if (strcmp(op, "STOR") == 0 || strcmp(op, "APPE") == 0)
+ oflag = O_WRONLY;
+ else
+ oflag = O_RDONLY;
+
+ /* initiate the transfer */
+ return (_ftp_transfer(conn, op, url->doc, oflag, url->offset, flags));
+}
+
+/*
+ * Get and stat file
+ */
+FILE *
+fetchXGetFTP(struct url *url, struct url_stat *us, const char *flags)
+{
+ return (_ftp_request(url, "RETR", us, _ftp_get_proxy(flags), flags));
+}
+
+/*
+ * Get file
+ */
+FILE *
+fetchGetFTP(struct url *url, const char *flags)
+{
+ return (fetchXGetFTP(url, NULL, flags));
+}
+
+/*
+ * Put file
+ */
+FILE *
+fetchPutFTP(struct url *url, const char *flags)
+{
+
+ return (_ftp_request(url, CHECK_FLAG('a') ? "APPE" : "STOR", NULL,
+ _ftp_get_proxy(flags), flags));
+}
+
+/*
+ * Get file stats
+ */
+int
+fetchStatFTP(struct url *url, struct url_stat *us, const char *flags)
+{
+ FILE *f;
+
+ f = _ftp_request(url, "STAT", us, _ftp_get_proxy(flags), flags);
+ if (f == NULL)
+ return (-1);
+ return (0);
+}
+
+/*
+ * List a directory
+ */
+struct url_ent *
+fetchListFTP(struct url *url, const char *flags)
+{
+ warnx("fetchListFTP(): not implemented");
+ return (NULL);
+}
diff --git a/lib/libfetch/ftp.errors b/lib/libfetch/ftp.errors
new file mode 100644
index 00000000..8d9d555f
--- /dev/null
+++ b/lib/libfetch/ftp.errors
@@ -0,0 +1,47 @@
+# $FreeBSD: /repoman/r/ncvs/src/lib/libfetch/ftp.errors,v 1.6 2002/10/30 06:06:16 des Exp $
+#
+# This list is taken from RFC 959.
+# It probably needs a going over.
+#
+110 OK Restart marker reply
+120 TEMP Service ready in a few minutes
+125 OK Data connection already open; transfer starting
+150 OK File status okay; about to open data connection
+200 OK Command okay
+202 PROTO Command not implemented, superfluous at this site
+211 INFO System status, or system help reply
+212 INFO Directory status
+213 INFO File status
+214 INFO Help message
+215 INFO Set system type
+220 OK Service ready for new user
+221 OK Service closing control connection
+225 OK Data connection open; no transfer in progress
+226 OK Requested file action successful
+227 OK Entering Passive Mode
+229 OK Entering Extended Passive Mode
+230 OK User logged in, proceed
+250 OK Requested file action okay, completed
+257 OK File/directory created
+331 AUTH User name okay, need password
+332 AUTH Need account for login
+350 OK Requested file action pending further information
+421 DOWN Service not available, closing control connection
+425 NETWORK Can't open data connection
+426 ABORT Connection closed; transfer aborted
+450 UNAVAIL File unavailable (e.g., file busy)
+451 SERVER Requested action aborted: local error in processing
+452 FULL Insufficient storage space in system
+500 PROTO Syntax error, command unrecognized
+501 PROTO Syntax error in parameters or arguments
+502 PROTO Command not implemented
+503 PROTO Bad sequence of commands
+504 PROTO Command not implemented for that parameter
+530 AUTH Not logged in
+532 AUTH Need account for storing files
+535 PROTO Bug in MediaHawk Video Kernel FTP server
+550 UNAVAIL File unavailable (e.g., file not found, no access)
+551 PROTO Requested action aborted. Page type unknown
+552 FULL Exceeded storage allocation
+553 EXISTS File name not allowed
+999 PROTO Protocol error
diff --git a/lib/libfetch/http.c b/lib/libfetch/http.c
new file mode 100644
index 00000000..c173b5d5
--- /dev/null
+++ b/lib/libfetch/http.c
@@ -0,0 +1,1225 @@
+/*-
+ * Copyright (c) 2000-2004 Dag-Erling Coïdan Smørgrav
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer
+ * in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#define _GNU_SOURCE
+
+#include <sys/cdefs.h>
+
+/*
+ * The following copyright applies to the base64 code:
+ *
+ *-
+ * Copyright 1997 Massachusetts Institute of Technology
+ *
+ * Permission to use, copy, modify, and distribute this software and
+ * its documentation for any purpose and without fee is hereby
+ * granted, provided that both the above copyright notice and this
+ * permission notice appear in all copies, that both the above
+ * copyright notice and this permission notice appear in all
+ * supporting documentation, and that the name of M.I.T. not be used
+ * in advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission. M.I.T. makes
+ * no representations about the suitability of this software for any
+ * purpose. It is provided "as is" without express or implied
+ * warranty.
+ *
+ * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
+ * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
+ * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/socket.h>
+
+#include <ctype.h>
+#include <libio.h>
+#include <err.h>
+#include <errno.h>
+#include <locale.h>
+#include <netdb.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+
+#include "fetch.h"
+#include "common.h"
+#include "httperr.h"
+
+/* Maximum number of redirects to follow */
+#define MAX_REDIRECT 5
+
+/* Symbolic names for reply codes we care about */
+#define HTTP_OK 200
+#define HTTP_PARTIAL 206
+#define HTTP_MOVED_PERM 301
+#define HTTP_MOVED_TEMP 302
+#define HTTP_SEE_OTHER 303
+#define HTTP_NEED_AUTH 401
+#define HTTP_NEED_PROXY_AUTH 407
+#define HTTP_BAD_RANGE 416
+#define HTTP_PROTOCOL_ERROR 999
+
+#define HTTP_REDIRECT(xyz) ((xyz) == HTTP_MOVED_PERM \
+ || (xyz) == HTTP_MOVED_TEMP \
+ || (xyz) == HTTP_SEE_OTHER)
+
+#define HTTP_ERROR(xyz) ((xyz) > 400 && (xyz) < 599)
+
+
+/*****************************************************************************
+ * I/O functions for decoding chunked streams
+ */
+
+struct httpio
+{
+ conn_t *conn; /* connection */
+ int chunked; /* chunked mode */
+ char *buf; /* chunk buffer */
+ size_t bufsize; /* size of chunk buffer */
+ ssize_t buflen; /* amount of data currently in buffer */
+ int bufpos; /* current read offset in buffer */
+ int eof; /* end-of-file flag */
+ int error; /* error flag */
+ size_t chunksize; /* remaining size of current chunk */
+#ifndef NDEBUG
+ size_t total;
+#endif
+};
+
+/*
+ * Get next chunk header
+ */
+static int
+_http_new_chunk(struct httpio *io)
+{
+ char hexdigits[23] = "0123456789abcdefABCDEF\0";
+ char *p = NULL;
+
+ if (_fetch_getln(io->conn) == -1)
+ return (-1);
+
+ if (io->conn->buflen < 2 || !strchr(hexdigits, *p))
+ return (-1);
+
+ for (p = io->conn->buf; *p && !isspace(*p); ++p) {
+ if (*p == ';')
+ break;
+ if (!strchr(hexdigits, *p))
+ return (-1);
+ if (isdigit(*p)) {
+ io->chunksize = io->chunksize * 16 +
+ *p - '0';
+ } else {
+ io->chunksize = io->chunksize * 16 +
+ 10 + tolower(*p) - 'a';
+ }
+ }
+
+#ifndef NDEBUG
+ if (fetchDebug) {
+ io->total += io->chunksize;
+ if (io->chunksize == 0)
+ fprintf(stderr, "%s(): end of last chunk\n", __func__);
+ else
+ fprintf(stderr, "%s(): new chunk: %lu (%lu)\n",
+ __func__, (unsigned long)io->chunksize,
+ (unsigned long)io->total);
+ }
+#endif
+
+ return (io->chunksize);
+}
+
+/*
+ * Grow the input buffer to at least len bytes
+ */
+static inline int
+_http_growbuf(struct httpio *io, size_t len)
+{
+ char *tmp;
+
+ if (io->bufsize >= len)
+ return (0);
+
+ if ((tmp = realloc(io->buf, len)) == NULL)
+ return (-1);
+ io->buf = tmp;
+ io->bufsize = len;
+ return (0);
+}
+
+/*
+ * Fill the input buffer, do chunk decoding on the fly
+ */
+static int
+_http_fillbuf(struct httpio *io, size_t len)
+{
+ if (io->error)
+ return (-1);
+ if (io->eof)
+ return (0);
+
+ if (io->chunked == 0) {
+ if (_http_growbuf(io, len) == -1)
+ return (-1);
+ if ((io->buflen = _fetch_read(io->conn, io->buf, len)) == -1) {
+ io->error = 1;
+ return (-1);
+ }
+ io->bufpos = 0;
+ return (io->buflen);
+ }
+
+ if (io->chunksize == 0) {
+ switch (_http_new_chunk(io)) {
+ case -1:
+ io->error = 1;
+ return (-1);
+ case 0:
+ io->eof = 1;
+ return (0);
+ }
+ }
+
+ if (len > io->chunksize)
+ len = io->chunksize;
+ if (_http_growbuf(io, len) == -1)
+ return (-1);
+ if ((io->buflen = _fetch_read(io->conn, io->buf, len)) == -1) {
+ io->error = 1;
+ return (-1);
+ }
+ io->chunksize -= io->buflen;
+
+ if (io->chunksize == 0) {
+ char endl[2];
+
+ if (_fetch_read(io->conn, endl, 2) != 2 ||
+ endl[0] != '\r' || endl[1] != '\n')
+ return (-1);
+ }
+
+ io->bufpos = 0;
+
+ return (io->buflen);
+}
+
+/*
+ * Read function
+ */
+static int
+_http_readfn(void *v, char *buf, int len)
+{
+ struct httpio *io = (struct httpio *)v;
+ int l, pos;
+
+ if (io->error)
+ return (-1);
+ if (io->eof)
+ return (0);
+
+ for (pos = 0; len > 0; pos += l, len -= l) {
+ /* empty buffer */
+ if (!io->buf || io->bufpos == io->buflen)
+ if (_http_fillbuf(io, len) < 1)
+ break;
+ l = io->buflen - io->bufpos;
+ if (len < l)
+ l = len;
+ bcopy(io->buf + io->bufpos, buf + pos, l);
+ io->bufpos += l;
+ }
+
+ if (!pos && io->error)
+ return (-1);
+ return (pos);
+}
+
+/*
+ * Write function
+ */
+static int
+_http_writefn(void *v, const char *buf, int len)
+{
+ struct httpio *io = (struct httpio *)v;
+
+ return (_fetch_write(io->conn, buf, len));
+}
+
+/*
+ * Close function
+ */
+static int
+_http_closefn(void *v)
+{
+ struct httpio *io = (struct httpio *)v;
+ int r;
+
+ r = _fetch_close(io->conn);
+ if (io->buf)
+ free(io->buf);
+ free(io);
+ return (r);
+}
+
+/*
+ * Wrap a file descriptor up
+ */
+static FILE *
+_http_funopen(conn_t *conn, int chunked)
+{
+ struct httpio *io;
+ FILE *f;
+
+ if ((io = calloc(1, sizeof(*io))) == NULL) {
+ _fetch_syserr();
+ return (NULL);
+ }
+ io->conn = conn;
+ io->chunked = chunked;
+ cookie_io_functions_t cookie;
+ cookie.read = (cookie_read_function_t *)_http_readfn;
+ cookie.write = (cookie_write_function_t *)_http_writefn;
+ cookie.seek = (cookie_seek_function_t *)NULL;
+ cookie.close = (cookie_close_function_t *)_http_closefn;
+ f = fopencookie(io, "rw", cookie);
+ if (f == NULL) {
+ _fetch_syserr();
+ free(io);
+ return (NULL);
+ }
+ return (f);
+}
+
+
+/*****************************************************************************
+ * Helper functions for talking to the server and parsing its replies
+ */
+
+/* Header types */
+typedef enum {
+ hdr_syserror = -2,
+ hdr_error = -1,
+ hdr_end = 0,
+ hdr_unknown = 1,
+ hdr_content_length,
+ hdr_content_range,
+ hdr_last_modified,
+ hdr_location,
+ hdr_transfer_encoding,
+ hdr_www_authenticate
+} hdr_t;
+
+/* Names of interesting headers */
+static struct {
+ hdr_t num;
+ const char *name;
+} hdr_names[] = {
+ { hdr_content_length, "Content-Length" },
+ { hdr_content_range, "Content-Range" },
+ { hdr_last_modified, "Last-Modified" },
+ { hdr_location, "Location" },
+ { hdr_transfer_encoding, "Transfer-Encoding" },
+ { hdr_www_authenticate, "WWW-Authenticate" },
+ { hdr_unknown, NULL },
+};
+
+/*
+ * Send a formatted line; optionally echo to terminal
+ */
+static int
+_http_cmd(conn_t *conn, const char *fmt, ...)
+{
+ va_list ap;
+ size_t len;
+ char *msg;
+ int r;
+
+ va_start(ap, fmt);
+ len = vasprintf(&msg, fmt, ap);
+ va_end(ap);
+
+ if (msg == NULL) {
+ errno = ENOMEM;
+ _fetch_syserr();
+ return (-1);
+ }
+
+ r = _fetch_putln(conn, msg, len);
+ free(msg);
+
+ if (r == -1) {
+ _fetch_syserr();
+ return (-1);
+ }
+
+ return (0);
+}
+
+/*
+ * Get and parse status line
+ */
+static int
+_http_get_reply(conn_t *conn)
+{
+ char *p;
+
+ if (_fetch_getln(conn) == -1)
+ return (-1);
+ /*
+ * A valid status line looks like "HTTP/m.n xyz reason" where m
+ * and n are the major and minor protocol version numbers and xyz
+ * is the reply code.
+ * Unfortunately, there are servers out there (NCSA 1.5.1, to name
+ * just one) that do not send a version number, so we can't rely
+ * on finding one, but if we do, insist on it being 1.0 or 1.1.
+ * We don't care about the reason phrase.
+ */
+ if (strncmp(conn->buf, "HTTP", 4) != 0)
+ return (HTTP_PROTOCOL_ERROR);
+ p = conn->buf + 4;
+ if (*p == '/') {
+ if (p[1] != '1' || p[2] != '.' || (p[3] != '0' && p[3] != '1'))
+ return (HTTP_PROTOCOL_ERROR);
+ p += 4;
+ }
+ if (*p != ' ' || !isdigit(p[1]) || !isdigit(p[2]) || !isdigit(p[3]))
+ return (HTTP_PROTOCOL_ERROR);
+
+ conn->err = (p[1] - '0') * 100 + (p[2] - '0') * 10 + (p[3] - '0');
+ return (conn->err);
+}
+
+/*
+ * Check a header; if the type matches the given string, return a pointer
+ * to the beginning of the value.
+ */
+static const char *
+_http_match(const char *str, const char *hdr)
+{
+ while (*str && *hdr && tolower(*str++) == tolower(*hdr++))
+ /* nothing */;
+ if (*str || *hdr != ':')
+ return (NULL);
+ while (*hdr && isspace(*++hdr))
+ /* nothing */;
+ return (hdr);
+}
+
+/*
+ * Get the next header and return the appropriate symbolic code.
+ */
+static hdr_t
+_http_next_header(conn_t *conn, const char **p)
+{
+ int i;
+
+ if (_fetch_getln(conn) == -1)
+ return (hdr_syserror);
+ while (conn->buflen && isspace(conn->buf[conn->buflen - 1]))
+ conn->buflen--;
+ conn->buf[conn->buflen] = '\0';
+ if (conn->buflen == 0)
+ return (hdr_end);
+ /*
+ * We could check for malformed headers but we don't really care.
+ * A valid header starts with a token immediately followed by a
+ * colon; a token is any sequence of non-control, non-whitespace
+ * characters except "()<>@,;:\\\"{}".
+ */
+ for (i = 0; hdr_names[i].num != hdr_unknown; i++)
+ if ((*p = _http_match(hdr_names[i].name, conn->buf)) != NULL)
+ return (hdr_names[i].num);
+ return (hdr_unknown);
+}
+
+/*
+ * Parse a last-modified header
+ */
+static int
+_http_parse_mtime(const char *p, time_t *mtime)
+{
+ char locale[64], *r;
+ struct tm tm;
+
+ strncpy(locale, setlocale(LC_TIME, NULL), sizeof(locale));
+ setlocale(LC_TIME, "C");
+ r = (char *)strptime(p, "%a, %d %b %Y %H:%M:%S GMT", &tm);
+ /* XXX should add support for date-2 and date-3 */
+ setlocale(LC_TIME, locale);
+ if (r == NULL)
+ return (-1);
+ DEBUG(fprintf(stderr, "last modified: [%04d-%02d-%02d "
+ "%02d:%02d:%02d]\n",
+ tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
+ tm.tm_hour, tm.tm_min, tm.tm_sec));
+ *mtime = timegm(&tm);
+ return (0);
+}
+
+/*
+ * Parse a content-length header
+ */
+static int
+_http_parse_length(const char *p, off_t *length)
+{
+ off_t len;
+
+ for (len = 0; *p && isdigit(*p); ++p)
+ len = len * 10 + (*p - '0');
+ if (*p)
+ return (-1);
+ DEBUG(fprintf(stderr, "content length: [%lld]\n",
+ (long long)len));
+ *length = len;
+ return (0);
+}
+
+/*
+ * Parse a content-range header
+ */
+static int
+_http_parse_range(const char *p, off_t *offset, off_t *length, off_t *size)
+{
+ off_t first, last, len;
+
+ if (strncasecmp(p, "bytes ", 6) != 0)
+ return (-1);
+ p += 6;
+ if (*p == '*') {
+ first = last = -1;
+ ++p;
+ } else {
+ for (first = 0; *p && isdigit(*p); ++p)
+ first = first * 10 + *p - '0';
+ if (*p != '-')
+ return (-1);
+ for (last = 0, ++p; *p && isdigit(*p); ++p)
+ last = last * 10 + *p - '0';
+ }
+ if (first > last || *p != '/')
+ return (-1);
+ for (len = 0, ++p; *p && isdigit(*p); ++p)
+ len = len * 10 + *p - '0';
+ if (*p || len < last - first + 1)
+ return (-1);
+ if (first == -1) {
+ DEBUG(fprintf(stderr, "content range: [*/%lld]\n",
+ (long long)len));
+ *length = 0;
+ } else {
+ DEBUG(fprintf(stderr, "content range: [%lld-%lld/%lld]\n",
+ (long long)first, (long long)last, (long long)len));
+ *length = last - first + 1;
+ }
+ *offset = first;
+ *size = len;
+ return (0);
+}
+
+
+/*****************************************************************************
+ * Helper functions for authorization
+ */
+
+/*
+ * Base64 encoding
+ */
+static char *
+_http_base64(const char *src)
+{
+ static const char base64[] =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+ "abcdefghijklmnopqrstuvwxyz"
+ "0123456789+/";
+ char *str, *dst;
+ size_t l;
+ int t, r;
+
+ l = strlen(src);
+ if ((str = malloc(((l + 2) / 3) * 4 + 1)) == NULL)
+ return (NULL);
+ dst = str;
+ r = 0;
+
+ while (l >= 3) {
+ t = (src[0] << 16) | (src[1] << 8) | src[2];
+ dst[0] = base64[(t >> 18) & 0x3f];
+ dst[1] = base64[(t >> 12) & 0x3f];
+ dst[2] = base64[(t >> 6) & 0x3f];
+ dst[3] = base64[(t >> 0) & 0x3f];
+ src += 3; l -= 3;
+ dst += 4; r += 4;
+ }
+
+ switch (l) {
+ case 2:
+ t = (src[0] << 16) | (src[1] << 8);
+ dst[0] = base64[(t >> 18) & 0x3f];
+ dst[1] = base64[(t >> 12) & 0x3f];
+ dst[2] = base64[(t >> 6) & 0x3f];
+ dst[3] = '=';
+ dst += 4;
+ r += 4;
+ break;
+ case 1:
+ t = src[0] << 16;
+ dst[0] = base64[(t >> 18) & 0x3f];
+ dst[1] = base64[(t >> 12) & 0x3f];
+ dst[2] = dst[3] = '=';
+ dst += 4;
+ r += 4;
+ break;
+ case 0:
+ break;
+ }
+
+ *dst = 0;
+ return (str);
+}
+
+/*
+ * Encode username and password
+ */
+static int
+_http_basic_auth(conn_t *conn, const char *hdr, const char *usr, const char *pwd)
+{
+ char *upw, *auth;
+ int r;
+
+ DEBUG(fprintf(stderr, "usr: [%s]\n", usr));
+ DEBUG(fprintf(stderr, "pwd: [%s]\n", pwd));
+ if (asprintf(&upw, "%s:%s", usr, pwd) == -1)
+ return (-1);
+ auth = _http_base64(upw);
+ free(upw);
+ if (auth == NULL)
+ return (-1);
+ r = _http_cmd(conn, "%s: Basic %s", hdr, auth);
+ free(auth);
+ return (r);
+}
+
+/*
+ * Send an authorization header
+ */
+static int
+_http_authorize(conn_t *conn, const char *hdr, const char *p)
+{
+ /* basic authorization */
+ if (strncasecmp(p, "basic:", 6) == 0) {
+ char *user, *pwd, *str;
+ int r;
+
+ /* skip realm */
+ for (p += 6; *p && *p != ':'; ++p)
+ /* nothing */ ;
+ if (!*p || strchr(++p, ':') == NULL)
+ return (-1);
+ if ((str = strdup(p)) == NULL)
+ return (-1); /* XXX */
+ user = str;
+ pwd = strchr(str, ':');
+ *pwd++ = '\0';
+ r = _http_basic_auth(conn, hdr, user, pwd);
+ free(str);
+ return (r);
+ }
+ return (-1);
+}
+
+
+/*****************************************************************************
+ * Helper functions for connecting to a server or proxy
+ */
+
+/*
+ * Connect to the correct HTTP server or proxy.
+ */
+static conn_t *
+_http_connect(struct url *URL, struct url *purl, const char *flags)
+{
+ conn_t *conn;
+ int verbose;
+ int af;
+
+#ifdef INET6
+ af = AF_UNSPEC;
+#else
+ af = AF_INET;
+#endif
+
+ verbose = CHECK_FLAG('v');
+ if (CHECK_FLAG('4'))
+ af = AF_INET;
+#ifdef INET6
+ else if (CHECK_FLAG('6'))
+ af = AF_INET6;
+#endif
+
+ if (purl && strcasecmp(URL->scheme, SCHEME_HTTPS) != 0) {
+ URL = purl;
+ } else if (strcasecmp(URL->scheme, SCHEME_FTP) == 0) {
+ /* can't talk http to an ftp server */
+ /* XXX should set an error code */
+ return (NULL);
+ }
+
+ if ((conn = _fetch_connect(URL->host, URL->port, af, verbose)) == NULL)
+ /* _fetch_connect() has already set an error code */
+ return (NULL);
+ if (strcasecmp(URL->scheme, SCHEME_HTTPS) == 0 &&
+ _fetch_ssl(conn, verbose) == -1) {
+ _fetch_close(conn);
+ /* grrr */
+ _fetch_syserr();
+ return (NULL);
+ }
+
+#ifdef TCP_NOPUSH
+ int val = 1;
+ setsockopt(conn->sd, IPPROTO_TCP, TCP_NOPUSH, &val, sizeof(val));
+#endif
+
+ return (conn);
+}
+
+static struct url *
+_http_get_proxy(const char *flags)
+{
+ struct url *purl;
+ char *p;
+
+ if (flags != NULL && strchr(flags, 'd') != NULL)
+ return (NULL);
+ if (((p = getenv("HTTP_PROXY")) || (p = getenv("http_proxy"))) &&
+ *p && (purl = fetchParseURL(p))) {
+ if (!*purl->scheme)
+ strcpy(purl->scheme, SCHEME_HTTP);
+ if (!purl->port)
+ purl->port = _fetch_default_proxy_port(purl->scheme);
+ if (strcasecmp(purl->scheme, SCHEME_HTTP) == 0)
+ return (purl);
+ fetchFreeURL(purl);
+ }
+ return (NULL);
+}
+
+static void
+_http_print_html(FILE *out, FILE *in)
+{
+ size_t len;
+ unsigned int sz = 1024;
+ char *line, *p, *q;
+ int comment, tag;
+
+ line = (char *)calloc(1024, sizeof(char));
+ comment = tag = 0;
+ while ((len = getline(&line, &sz, in)) > 0) {
+ while (len && isspace(line[len - 1]))
+ --len;
+ for (p = q = line; q < line + len; ++q) {
+ if (comment && *q == '-') {
+ if (q + 2 < line + len &&
+ strcmp(q, "-->") == 0) {
+ tag = comment = 0;
+ q += 2;
+ }
+ } else if (tag && !comment && *q == '>') {
+ p = q + 1;
+ tag = 0;
+ } else if (!tag && *q == '<') {
+ if (q > p)
+ fwrite(p, q - p, 1, out);
+ tag = 1;
+ if (q + 3 < line + len &&
+ strcmp(q, "<!--") == 0) {
+ comment = 1;
+ q += 3;
+ }
+ }
+ }
+ if (!tag && q > p)
+ fwrite(p, q - p, 1, out);
+ fputc('\n', out);
+ }
+}
+
+
+/*****************************************************************************
+ * Core
+ */
+
+/*
+ * Send a request and process the reply
+ *
+ * XXX This function is way too long, the do..while loop should be split
+ * XXX off into a separate function.
+ */
+FILE *
+_http_request(struct url *URL, const char *op, struct url_stat *us,
+ struct url *purl, const char *flags)
+{
+ conn_t *conn;
+ struct url *url, *new;
+ int chunked, direct, need_auth, noredirect, verbose;
+ int e, i, n, val;
+ off_t offset, clength, length, size;
+ time_t mtime;
+ const char *p;
+ FILE *f;
+ hdr_t h;
+ char hbuf[MAXHOSTNAMELEN + 7], *host;
+
+ direct = CHECK_FLAG('d');
+ noredirect = CHECK_FLAG('A');
+ verbose = CHECK_FLAG('v');
+
+ if (direct && purl) {
+ fetchFreeURL(purl);
+ purl = NULL;
+ }
+
+ /* try the provided URL first */
+ url = URL;
+
+ /* if the A flag is set, we only get one try */
+ n = noredirect ? 1 : MAX_REDIRECT;
+ i = 0;
+
+ e = HTTP_PROTOCOL_ERROR;
+ need_auth = 0;
+ do {
+ new = NULL;
+ chunked = 0;
+ offset = 0;
+ clength = -1;
+ length = -1;
+ size = -1;
+ mtime = 0;
+
+ /* check port */
+ if (!url->port)
+ url->port = _fetch_default_port(url->scheme);
+
+ /* were we redirected to an FTP URL? */
+ if (purl == NULL && strcmp(url->scheme, SCHEME_FTP) == 0) {
+ if (strcmp(op, "GET") == 0)
+ return (_ftp_request(url, "RETR", us, purl, flags));
+ else if (strcmp(op, "HEAD") == 0)
+ return (_ftp_request(url, "STAT", us, purl, flags));
+ }
+
+ /* connect to server or proxy */
+ if ((conn = _http_connect(url, purl, flags)) == NULL)
+ goto ouch;
+
+ host = url->host;
+#ifdef INET6
+ if (strchr(url->host, ':')) {
+ snprintf(hbuf, sizeof(hbuf), "[%s]", url->host);
+ host = hbuf;
+ }
+#endif
+ if (url->port != _fetch_default_port(url->scheme)) {
+ if (host != hbuf) {
+ strcpy(hbuf, host);
+ host = hbuf;
+ }
+ snprintf(hbuf + strlen(hbuf),
+ sizeof(hbuf) - strlen(hbuf), ":%d", url->port);
+ }
+
+ /* send request */
+ if (verbose)
+ _fetch_info("requesting %s://%s%s",
+ url->scheme, host, url->doc);
+ if (purl) {
+ _http_cmd(conn, "%s %s://%s%s HTTP/1.1",
+ op, url->scheme, host, url->doc);
+ } else {
+ _http_cmd(conn, "%s %s HTTP/1.1",
+ op, url->doc);
+ }
+
+ /* virtual host */
+ _http_cmd(conn, "Host: %s", host);
+
+ /* proxy authorization */
+ if (purl) {
+ if (*purl->user || *purl->pwd)
+ _http_basic_auth(conn, "Proxy-Authorization",
+ purl->user, purl->pwd);
+ else if ((p = getenv("HTTP_PROXY_AUTH")) != NULL && *p != '\0')
+ _http_authorize(conn, "Proxy-Authorization", p);
+ }
+
+ /* server authorization */
+ if (need_auth || *url->user || *url->pwd) {
+ if (*url->user || *url->pwd)
+ _http_basic_auth(conn, "Authorization", url->user, url->pwd);
+ else if ((p = getenv("HTTP_AUTH")) != NULL && *p != '\0')
+ _http_authorize(conn, "Authorization", p);
+ else if (fetchAuthMethod && fetchAuthMethod(url) == 0) {
+ _http_basic_auth(conn, "Authorization", url->user, url->pwd);
+ } else {
+ _http_seterr(HTTP_NEED_AUTH);
+ goto ouch;
+ }
+ }
+
+ /* other headers */
+ if ((p = getenv("HTTP_REFERER")) != NULL && *p != '\0') {
+ if (strcasecmp(p, "auto") == 0)
+ _http_cmd(conn, "Referer: %s://%s%s",
+ url->scheme, host, url->doc);
+ else
+ _http_cmd(conn, "Referer: %s", p);
+ }
+ if ((p = getenv("HTTP_USER_AGENT")) != NULL && *p != '\0')
+ _http_cmd(conn, "User-Agent: %s", p);
+ else
+ _http_cmd(conn, "User-Agent: " _LIBFETCH_VER);
+ if (url->offset > 0)
+ _http_cmd(conn, "Range: bytes=%lld-", (long long)url->offset);
+ _http_cmd(conn, "Connection: close");
+ _http_cmd(conn, "");
+
+ /*
+ * Force the queued request to be dispatched. Normally, one
+ * would do this with shutdown(2) but squid proxies can be
+ * configured to disallow such half-closed connections. To
+ * be compatible with such configurations, fiddle with socket
+ * options to force the pending data to be written.
+ */
+#ifdef TCP_NOPUSH
+ val = 0;
+ setsockopt(conn->sd, IPPROTO_TCP, TCP_NOPUSH, &val,
+ sizeof(val));
+#endif
+ val = 1;
+ setsockopt(conn->sd, IPPROTO_TCP, TCP_NODELAY, &val,
+ sizeof(val));
+
+ /* get reply */
+ switch (_http_get_reply(conn)) {
+ case HTTP_OK:
+ case HTTP_PARTIAL:
+ /* fine */
+ break;
+ case HTTP_MOVED_PERM:
+ case HTTP_MOVED_TEMP:
+ case HTTP_SEE_OTHER:
+ /*
+ * Not so fine, but we still have to read the
+ * headers to get the new location.
+ */
+ break;
+ case HTTP_NEED_AUTH:
+ if (need_auth) {
+ /*
+ * We already sent out authorization code,
+ * so there's nothing more we can do.
+ */
+ _http_seterr(conn->err);
+ goto ouch;
+ }
+ /* try again, but send the password this time */
+ if (verbose)
+ _fetch_info("server requires authorization");
+ break;
+ case HTTP_NEED_PROXY_AUTH:
+ /*
+ * If we're talking to a proxy, we already sent
+ * our proxy authorization code, so there's
+ * nothing more we can do.
+ */
+ _http_seterr(conn->err);
+ goto ouch;
+ case HTTP_BAD_RANGE:
+ /*
+ * This can happen if we ask for 0 bytes because
+ * we already have the whole file. Consider this
+ * a success for now, and check sizes later.
+ */
+ break;
+ case HTTP_PROTOCOL_ERROR:
+ /* fall through */
+ case -1:
+ _fetch_syserr();
+ goto ouch;
+ default:
+ _http_seterr(conn->err);
+ goto ouch;
+ /* fall through so we can get the full error message */
+ }
+
+ /* get headers */
+ do {
+ switch ((h = _http_next_header(conn, &p))) {
+ case hdr_syserror:
+ _fetch_syserr();
+ goto ouch;
+ case hdr_error:
+ _http_seterr(HTTP_PROTOCOL_ERROR);
+ goto ouch;
+ case hdr_content_length:
+ _http_parse_length(p, &clength);
+ break;
+ case hdr_content_range:
+ _http_parse_range(p, &offset, &length, &size);
+ break;
+ case hdr_last_modified:
+ _http_parse_mtime(p, &mtime);
+ break;
+ case hdr_location:
+ if (!HTTP_REDIRECT(conn->err))
+ break;
+ if (new)
+ free(new);
+ if (verbose)
+ _fetch_info("%d redirect to %s", conn->err, p);
+ if (*p == '/')
+ /* absolute path */
+ new = fetchMakeURL(url->scheme, url->host, url->port, p,
+ url->user, url->pwd);
+ else
+ new = fetchParseURL(p);
+ if (new == NULL) {
+ /* XXX should set an error code */
+ DEBUG(fprintf(stderr, "failed to parse new URL\n"));
+ goto ouch;
+ }
+ if (!*new->user && !*new->pwd) {
+ strcpy(new->user, url->user);
+ strcpy(new->pwd, url->pwd);
+ }
+ new->offset = url->offset;
+ new->length = url->length;
+ break;
+ case hdr_transfer_encoding:
+ /* XXX weak test*/
+ chunked = (strcasecmp(p, "chunked") == 0);
+ break;
+ case hdr_www_authenticate:
+ if (conn->err != HTTP_NEED_AUTH)
+ break;
+ /* if we were smarter, we'd check the method and realm */
+ break;
+ case hdr_end:
+ /* fall through */
+ case hdr_unknown:
+ /* ignore */
+ break;
+ }
+ } while (h > hdr_end);
+
+ /* we need to provide authentication */
+ if (conn->err == HTTP_NEED_AUTH) {
+ e = conn->err;
+ need_auth = 1;
+ _fetch_close(conn);
+ conn = NULL;
+ continue;
+ }
+
+ /* requested range not satisfiable */
+ if (conn->err == HTTP_BAD_RANGE) {
+ if (url->offset == size && url->length == 0) {
+ /* asked for 0 bytes; fake it */
+ offset = url->offset;
+ conn->err = HTTP_OK;
+ break;
+ } else {
+ _http_seterr(conn->err);
+ goto ouch;
+ }
+ }
+
+ /* we have a hit or an error */
+ if (conn->err == HTTP_OK || conn->err == HTTP_PARTIAL || HTTP_ERROR(conn->err))
+ break;
+
+ /* all other cases: we got a redirect */
+ e = conn->err;
+ need_auth = 0;
+ _fetch_close(conn);
+ conn = NULL;
+ if (!new) {
+ DEBUG(fprintf(stderr, "redirect with no new location\n"));
+ break;
+ }
+ if (url != URL)
+ fetchFreeURL(url);
+ url = new;
+ } while (++i < n);
+
+ /* we failed, or ran out of retries */
+ if (conn == NULL) {
+ _http_seterr(e);
+ goto ouch;
+ }
+
+ DEBUG(fprintf(stderr, "offset %lld, length %lld,"
+ " size %lld, clength %lld\n",
+ (long long)offset, (long long)length,
+ (long long)size, (long long)clength));
+
+ /* check for inconsistencies */
+ if (clength != -1 && length != -1 && clength != length) {
+ _http_seterr(HTTP_PROTOCOL_ERROR);
+ goto ouch;
+ }
+ if (clength == -1)
+ clength = length;
+ if (clength != -1)
+ length = offset + clength;
+ if (length != -1 && size != -1 && length != size) {
+ _http_seterr(HTTP_PROTOCOL_ERROR);
+ goto ouch;
+ }
+ if (size == -1)
+ size = length;
+
+ /* fill in stats */
+ if (us) {
+ us->size = size;
+ us->atime = us->mtime = mtime;
+ }
+
+ /* too far? */
+ if (URL->offset > 0 && offset > URL->offset) {
+ _http_seterr(HTTP_PROTOCOL_ERROR);
+ goto ouch;
+ }
+
+ /* report back real offset and size */
+ URL->offset = offset;
+ URL->length = clength;
+
+ /* wrap it up in a FILE */
+ if ((f = _http_funopen(conn, chunked)) == NULL) {
+ _fetch_syserr();
+ goto ouch;
+ }
+
+ if (url != URL)
+ fetchFreeURL(url);
+ if (purl)
+ fetchFreeURL(purl);
+
+ if (HTTP_ERROR(conn->err)) {
+ _http_print_html(stderr, f);
+ fclose(f);
+ f = NULL;
+ }
+
+ return (f);
+
+ouch:
+ if (url != URL)
+ fetchFreeURL(url);
+ if (purl)
+ fetchFreeURL(purl);
+ if (conn != NULL)
+ _fetch_close(conn);
+ return (NULL);
+}
+
+
+/*****************************************************************************
+ * Entry points
+ */
+
+/*
+ * Retrieve and stat a file by HTTP
+ */
+FILE *
+fetchXGetHTTP(struct url *URL, struct url_stat *us, const char *flags)
+{
+ return (_http_request(URL, "GET", us, _http_get_proxy(flags), flags));
+}
+
+/*
+ * Retrieve a file by HTTP
+ */
+FILE *
+fetchGetHTTP(struct url *URL, const char *flags)
+{
+ return (fetchXGetHTTP(URL, NULL, flags));
+}
+
+/*
+ * Store a file by HTTP
+ */
+FILE *
+fetchPutHTTP(struct url *URL, const char *flags)
+{
+ warnx("fetchPutHTTP(): not implemented");
+ return (NULL);
+}
+
+/*
+ * Get an HTTP document's metadata
+ */
+int
+fetchStatHTTP(struct url *URL, struct url_stat *us, const char *flags)
+{
+ FILE *f;
+
+ f = _http_request(URL, "HEAD", us, _http_get_proxy(flags), flags);
+ if (f == NULL)
+ return (-1);
+ fclose(f);
+ return (0);
+}
+
+/*
+ * List a directory
+ */
+struct url_ent *
+fetchListHTTP(struct url *url, const char *flags)
+{
+ warnx("fetchListHTTP(): not implemented");
+ return (NULL);
+}
diff --git a/lib/libfetch/http.errors b/lib/libfetch/http.errors
new file mode 100644
index 00000000..9fee2277
--- /dev/null
+++ b/lib/libfetch/http.errors
@@ -0,0 +1,45 @@
+# $FreeBSD: /repoman/r/ncvs/src/lib/libfetch/http.errors,v 1.5 2001/05/23 18:52:02 des Exp $
+#
+# This list is taken from RFC 2068.
+#
+100 OK Continue
+101 OK Switching Protocols
+200 OK OK
+201 OK Created
+202 OK Accepted
+203 INFO Non-Authoritative Information
+204 OK No Content
+205 OK Reset Content
+206 OK Partial Content
+300 MOVED Multiple Choices
+301 MOVED Moved Permanently
+302 MOVED Moved Temporarily
+303 MOVED See Other
+304 OK Not Modified
+305 INFO Use Proxy
+307 MOVED Temporary Redirect
+400 PROTO Bad Request
+401 AUTH Unauthorized
+402 AUTH Payment Required
+403 AUTH Forbidden
+404 UNAVAIL Not Found
+405 PROTO Method Not Allowed
+406 PROTO Not Acceptable
+407 AUTH Proxy Authentication Required
+408 TIMEOUT Request Time-out
+409 EXISTS Conflict
+410 UNAVAIL Gone
+411 PROTO Length Required
+412 SERVER Precondition Failed
+413 PROTO Request Entity Too Large
+414 PROTO Request-URI Too Large
+415 PROTO Unsupported Media Type
+416 UNAVAIL Requested Range Not Satisfiable
+417 SERVER Expectation Failed
+500 SERVER Internal Server Error
+501 PROTO Not Implemented
+502 SERVER Bad Gateway
+503 TEMP Service Unavailable
+504 TIMEOUT Gateway Time-out
+505 PROTO HTTP Version not supported
+999 PROTO Protocol error
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-11-20 16:54:43 +0100