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-rw-r--r--lib/libalpm/dload.c586
1 files changed, 307 insertions, 279 deletions
diff --git a/lib/libalpm/dload.c b/lib/libalpm/dload.c
index f0c1ca90..2e50544b 100644
--- a/lib/libalpm/dload.c
+++ b/lib/libalpm/dload.c
@@ -35,22 +35,13 @@
#include "error.h"
#include "handle.h"
-/* Return a 'struct url' for this server, for downloading 'filename'. */
-static struct url *url_for_file(const char *url, const char *filename)
+/* Build a 'struct url' from an url. */
+static struct url *url_for_string(const char *url)
{
struct url *ret = NULL;
- char *buf = NULL;
- int len;
-
- /* print url + filename into a buffer */
- len = strlen(url) + strlen(filename) + 2;
- CALLOC(buf, len, sizeof(char), RET_ERR(PM_ERR_MEMORY, NULL));
- snprintf(buf, len, "%s/%s", url, filename);
-
- ret = downloadParseURL(buf);
- FREE(buf);
+ ret = downloadParseURL(url);
if(!ret) {
- _alpm_log(PM_LOG_ERROR, _("url '%s' is invalid\n"), buf);
+ _alpm_log(PM_LOG_ERROR, _("url '%s' is invalid\n"), url);
RET_ERR(PM_ERR_SERVER_BAD_URL, NULL);
}
@@ -68,302 +59,338 @@ static struct url *url_for_file(const char *url, const char *filename)
return(ret);
}
-/* TODO temporary private declaration */
-int _alpm_downloadfiles_forreal(alpm_list_t *servers, const char *localpath,
- alpm_list_t *files, time_t mtime1, time_t *mtime2);
+static char *get_filename(const char *url) {
+ char *filename = strrchr(url, '/');
+ if(filename != NULL) {
+ filename++;
+ }
+ return(filename);
+}
+static char *get_destfile(const char *path, const char *filename) {
+ char *destfile;
+ /* len = localpath len + filename len + null */
+ int len = strlen(path) + strlen(filename) + 1;
+ CALLOC(destfile, len, sizeof(char), RET_ERR(PM_ERR_MEMORY, NULL));
+ snprintf(destfile, len, "%s%s", path, filename);
-/* TODO implement these as real functions */
-int _alpm_download_single_file(const char *filename,
- alpm_list_t *servers, const char *localpath,
- time_t mtimeold, time_t *mtimenew)
-{
- alpm_list_t *files = NULL;
- int ret;
+ return(destfile);
+}
+
+static char *get_tempfile(const char *path, const char *filename) {
+ char *tempfile;
+ /* len = localpath len + filename len + '.part' len + null */
+ int len = strlen(path) + strlen(filename) + 6;
+ CALLOC(tempfile, len, sizeof(char), RET_ERR(PM_ERR_MEMORY, NULL));
+ snprintf(tempfile, len, "%s%s.part", path, filename);
+
+ return(tempfile);
+}
+
+static int download_internal(const char *url, const char *localpath,
+ time_t mtimeold, time_t *mtimenew) {
+ FILE *dlf, *localf = NULL;
+ struct url_stat ust;
+ struct stat st;
+ int chk_resume = 0;
+ int dl_thisfile = 0;
+ char *tempfile, *destfile, *filename;
+ int ret = 0;
+ struct url *fileurl = url_for_string(url);
+
+ if(!fileurl) {
+ return(-1);
+ }
+
+ filename = get_filename(url);
+ if(!filename) {
+ return(-1);
+ }
+ destfile = get_destfile(localpath, filename);
+ tempfile = get_tempfile(localpath, filename);
+
+ /* pass the raw filename for passing to the callback function */
+ _alpm_log(PM_LOG_DEBUG, "using '%s' for download progress\n", filename);
+
+ if(stat(tempfile, &st) == 0 && st.st_size > 0) {
+ _alpm_log(PM_LOG_DEBUG, "existing file found, using it\n");
+ fileurl->offset = (off_t)st.st_size;
+ dl_thisfile = st.st_size;
+ localf = fopen(tempfile, "ab");
+ chk_resume = 1;
+ } else {
+ fileurl->offset = (off_t)0;
+ dl_thisfile = 0;
+ }
+
+ /* libdownload does not reset the error code, reset it in
+ * the case of previous errors */
+ downloadLastErrCode = 0;
+
+ /* 10s timeout - TODO make a config option */
+ downloadTimeout = 10000;
+
+ dlf = downloadXGet(fileurl, &ust, (handle->nopassiveftp ? "" : "p"));
+
+ if(downloadLastErrCode != 0 || dlf == NULL) {
+ const char *host = _("disk");
+ if(strcmp(SCHEME_FILE, fileurl->scheme) != 0) {
+ host = fileurl->host;
+ }
+ _alpm_log(PM_LOG_ERROR, _("failed retrieving file '%s' from %s : %s\n"),
+ filename, host, downloadLastErrString);
+ ret = -1;
+ goto cleanup;
+ } else {
+ _alpm_log(PM_LOG_DEBUG, "connected to %s successfully\n", fileurl->host);
+ }
- /* make a temp one element list */
- files = alpm_list_add(files, (char*)filename);
+ if(ust.mtime && mtimeold && ust.mtime == mtimeold) {
+ _alpm_log(PM_LOG_DEBUG, "mtimes are identical, skipping %s\n", filename);
+ ret = 1;
+ goto cleanup;
+ }
- ret = _alpm_downloadfiles_forreal(servers, localpath,
- files, mtimeold, mtimenew);
+ if(ust.mtime && mtimenew) {
+ *mtimenew = ust.mtime;
+ }
- /* free list (data was NOT duplicated) */
- alpm_list_free(files);
+ if(chk_resume && fileurl->offset == 0) {
+ _alpm_log(PM_LOG_WARNING, _("cannot resume download, starting over\n"));
+ if(localf != NULL) {
+ fclose(localf);
+ localf = NULL;
+ }
+ }
+
+ if(localf == NULL) {
+ _alpm_rmrf(tempfile);
+ fileurl->offset = (off_t)0;
+ dl_thisfile = 0;
+ localf = fopen(tempfile, "wb");
+ if(localf == NULL) { /* still null? */
+ _alpm_log(PM_LOG_ERROR, _("cannot write to file '%s'\n"), tempfile);
+ ret = -1;
+ goto cleanup;
+ }
+ }
+
+ /* Progress 0 - initialize */
+ if(handle->dlcb) {
+ handle->dlcb(filename, 0, ust.size);
+ }
+
+ int nread = 0;
+ char buffer[PM_DLBUF_LEN];
+ while((nread = fread(buffer, 1, PM_DLBUF_LEN, dlf)) > 0) {
+ if(ferror(dlf)) {
+ _alpm_log(PM_LOG_ERROR, _("error downloading '%s': %s\n"),
+ filename, downloadLastErrString);
+ ret = -1;
+ goto cleanup;
+ }
+
+ int nwritten = 0;
+ while(nwritten < nread) {
+ nwritten += fwrite(buffer, 1, (nread - nwritten), localf);
+ if(ferror(localf)) {
+ _alpm_log(PM_LOG_ERROR, _("error writing to file '%s': %s\n"),
+ destfile, strerror(errno));
+ ret = -1;
+ goto cleanup;
+ }
+ }
+ dl_thisfile += nread;
+
+ if(handle->dlcb) {
+ handle->dlcb(filename, dl_thisfile, ust.size);
+ }
+ }
+ /* probably safer to close the file descriptors now before renaming the file,
+ * for example to make sure the buffers are flushed.
+ */
+ fclose(localf);
+ localf = NULL;
+ fclose(dlf);
+ dlf = NULL;
+
+ rename(tempfile, destfile);
+ ret = 0;
+
+cleanup:
+ FREE(tempfile);
+ FREE(destfile);
+ if(localf != NULL) {
+ fclose(localf);
+ }
+ if(dlf != NULL) {
+ fclose(dlf);
+ }
+ downloadFreeURL(fileurl);
return(ret);
}
-int _alpm_download_files(alpm_list_t *files,
- alpm_list_t *servers, const char *localpath)
-{
- int ret;
+static int download_external(const char *url, const char *localpath,
+ time_t mtimeold, time_t *mtimenew) {
+ int ret = 0;
+ int retval;
+ int usepart = 0;
+ char *ptr1, *ptr2;
+ char origCmd[PATH_MAX];
+ char parsedCmd[PATH_MAX] = "";
+ char cwd[PATH_MAX];
+ char *destfile, *tempfile, *filename;
+
+ filename = get_filename(url);
+ if(!filename) {
+ return(-1);
+ }
+ destfile = get_destfile(localpath, filename);
+ tempfile = get_tempfile(localpath, filename);
+
+ /* replace all occurrences of %o with fn.part */
+ strncpy(origCmd, handle->xfercommand, sizeof(origCmd));
+ ptr1 = origCmd;
+ while((ptr2 = strstr(ptr1, "%o"))) {
+ usepart = 1;
+ ptr2[0] = '\0';
+ strcat(parsedCmd, ptr1);
+ strcat(parsedCmd, tempfile);
+ ptr1 = ptr2 + 2;
+ }
+ strcat(parsedCmd, ptr1);
+ /* replace all occurrences of %u with the download URL */
+ strncpy(origCmd, parsedCmd, sizeof(origCmd));
+ parsedCmd[0] = '\0';
+ ptr1 = origCmd;
+ while((ptr2 = strstr(ptr1, "%u"))) {
+ ptr2[0] = '\0';
+ strcat(parsedCmd, ptr1);
+ strcat(parsedCmd, url);
+ ptr1 = ptr2 + 2;
+ }
+ strcat(parsedCmd, ptr1);
+ /* cwd to the download directory */
+ getcwd(cwd, PATH_MAX);
+ if(chdir(localpath)) {
+ _alpm_log(PM_LOG_WARNING, _("could not chdir to %s\n"), localpath);
+ pm_errno = PM_ERR_CONNECT_FAILED;
+ ret = -1;
+ goto cleanup;
+ }
+ /* execute the parsed command via /bin/sh -c */
+ _alpm_log(PM_LOG_DEBUG, "running command: %s\n", parsedCmd);
+ retval = system(parsedCmd);
+
+ if(retval == -1) {
+ _alpm_log(PM_LOG_WARNING, _("running XferCommand: fork failed!\n"));
+ pm_errno = PM_ERR_FORK_FAILED;
+ ret = -1;
+ } else if(retval != 0) {
+ /* download failed */
+ _alpm_log(PM_LOG_DEBUG, "XferCommand command returned non-zero status "
+ "code (%d)\n", retval);
+ ret = -1;
+ } else {
+ /* download was successful */
+ if(usepart) {
+ rename(tempfile, destfile);
+ }
+ ret = 0;
+ }
- ret = _alpm_downloadfiles_forreal(servers, localpath,
- files, 0, NULL);
+cleanup:
+ chdir(cwd);
+ if(ret == -1) {
+ /* hack to let an user the time to cancel a download */
+ sleep(2);
+ }
+ FREE(destfile);
+ FREE(tempfile);
return(ret);
}
+static int download(const char *url, const char *localpath,
+ time_t mtimeold, time_t *mtimenew) {
+ int ret;
+ const char *proto = "file://";
+ int len = strlen(proto);
+ if(strncmp(url, proto, len) == 0) {
+ /* we can simply grab an absolute path from the file:// url by starting
+ * our path at the char following the proto (the root '/')
+ */
+ const char *sourcefile = url + len;
+ const char *filename = get_filename(url);
+ const char *destfile = get_destfile(localpath, filename);
+
+ if(_alpm_copyfile(sourcefile, destfile) == 0) {
+ return(0);
+ } else {
+ return(-1);
+ }
+ }
+
+ if(handle->xfercommand == NULL) {
+ ret = download_internal(url, localpath, mtimeold, mtimenew);
+ } else {
+ ret = download_external(url, localpath, mtimeold, mtimenew);
+ }
+ return(ret);
+}
/*
- * This is the real downloadfiles, used directly by sync_synctree() to check
- * modtimes on remote files.
- * - if mtime1 is non-NULL, then only download files if they are different
- * than mtime1.
- * - if *mtime2 is non-NULL, it will be filled with the mtime of the remote
+ * Download a single file
+ * - if mtimeold is non-NULL, then only download the file if it's different
+ * than mtimeold.
+ * - if *mtimenew is non-NULL, it will be filled with the mtime of the remote
* file.
*
* RETURN: 0 for successful download
* 1 if the mtimes are identical
* -1 on error
*/
-int _alpm_downloadfiles_forreal(alpm_list_t *servers, const char *localpath,
- alpm_list_t *files, time_t mtime1, time_t *mtime2)
+int _alpm_download_single_file(const char *filename,
+ alpm_list_t *servers, const char *localpath,
+ time_t mtimeold, time_t *mtimenew)
{
- int dl_thisfile = 0;
- alpm_list_t *lp;
- alpm_list_t *complete = NULL;
alpm_list_t *i;
int ret = -1;
- char *pkgname = NULL;
-
- ALPM_LOG_FUNC;
-
- if(files == NULL) {
- return(0);
- }
for(i = servers; i; i = i->next) {
const char *server = i->data;
+ char *fileurl = NULL;
+ int len;
+
+ /* print server + filename into a buffer */
+ len = strlen(server) + strlen(filename) + 2;
+ CALLOC(fileurl, len, sizeof(char), RET_ERR(PM_ERR_MEMORY, -1));
+ snprintf(fileurl, len, "%s/%s", server, filename);
+
+ ret = download(fileurl, localpath, mtimeold, mtimenew);
+ FREE(fileurl);
+ if(ret != -1) {
+ break;
+ }
+ }
- /* get each file in the list */
- for(lp = files; lp; lp = lp->next) {
- struct url *fileurl = NULL;
- char realfile[PATH_MAX];
- char output[PATH_MAX];
- char *fn = (char *)lp->data;
-
- fileurl = url_for_file(server, fn);
- if(!fileurl) {
- goto cleanup;
- }
-
- /* pass the raw filename for passing to the callback function */
- FREE(pkgname);
- STRDUP(pkgname, fn, (void)0);
- _alpm_log(PM_LOG_DEBUG, "using '%s' for download progress\n", pkgname);
-
- snprintf(realfile, PATH_MAX, "%s%s", localpath, fn);
- snprintf(output, PATH_MAX, "%s%s.part", localpath, fn);
-
- if(alpm_list_find_str(complete, fn)) {
- continue;
- }
+ return(ret);
+}
- if(!handle->xfercommand
- || !strcmp(fileurl->scheme, "file")) {
- FILE *dlf, *localf = NULL;
- struct url_stat ust;
- struct stat st;
- int chk_resume = 0;
-
- if(stat(output, &st) == 0 && st.st_size > 0) {
- _alpm_log(PM_LOG_DEBUG, "existing file found, using it\n");
- fileurl->offset = (off_t)st.st_size;
- dl_thisfile = st.st_size;
- localf = fopen(output, "a");
- chk_resume = 1;
- } else {
- fileurl->offset = (off_t)0;
- dl_thisfile = 0;
- }
-
- /* libdownload does not reset the error code, reset it in
- * the case of previous errors */
- downloadLastErrCode = 0;
-
- /* 10s timeout - TODO make a config option */
- downloadTimeout = 10000;
-
- dlf = downloadXGet(fileurl, &ust, (handle->nopassiveftp ? "" : "p"));
-
- if(downloadLastErrCode != 0 || dlf == NULL) {
- const char *host = _("disk");
- if(strcmp(SCHEME_FILE, fileurl->scheme) != 0) {
- host = fileurl->host;
- }
- _alpm_log(PM_LOG_ERROR, _("failed retrieving file '%s' from %s : %s\n"),
- fn, host, downloadLastErrString);
- if(localf != NULL) {
- fclose(localf);
- }
- /* try the next server */
- downloadFreeURL(fileurl);
- continue;
- } else {
- _alpm_log(PM_LOG_DEBUG, "connected to %s successfully\n", fileurl->host);
- }
-
- if(ust.mtime && mtime1 && ust.mtime == mtime1) {
- _alpm_log(PM_LOG_DEBUG, "mtimes are identical, skipping %s\n", fn);
- complete = alpm_list_add(complete, fn);
- if(localf != NULL) {
- fclose(localf);
- }
- if(dlf != NULL) {
- fclose(dlf);
- }
- downloadFreeURL(fileurl);
- ret = 1;
- goto cleanup;
- }
-
- if(ust.mtime && mtime2) {
- *mtime2 = ust.mtime;
- }
-
- if(chk_resume && fileurl->offset == 0) {
- _alpm_log(PM_LOG_WARNING, _("cannot resume download, starting over\n"));
- if(localf != NULL) {
- fclose(localf);
- localf = NULL;
- }
- }
-
- if(localf == NULL) {
- _alpm_rmrf(output);
- fileurl->offset = (off_t)0;
- dl_thisfile = 0;
- localf = fopen(output, "w");
- if(localf == NULL) { /* still null? */
- _alpm_log(PM_LOG_ERROR, _("cannot write to file '%s'\n"), output);
- if(dlf != NULL) {
- fclose(dlf);
- }
- downloadFreeURL(fileurl);
- goto cleanup;
- }
- }
-
- /* Progress 0 - initialize */
- if(handle->dlcb) {
- handle->dlcb(pkgname, 0, ust.size);
- }
-
- int nread = 0;
- char buffer[PM_DLBUF_LEN];
- while((nread = fread(buffer, 1, PM_DLBUF_LEN, dlf)) > 0) {
- if(ferror(dlf)) {
- _alpm_log(PM_LOG_ERROR, _("error downloading '%s': %s\n"),
- fn, downloadLastErrString);
- fclose(localf);
- fclose(dlf);
- downloadFreeURL(fileurl);
- goto cleanup;
- }
-
- int nwritten = 0;
- while(nwritten < nread) {
- nwritten += fwrite(buffer, 1, (nread - nwritten), localf);
- if(ferror(localf)) {
- _alpm_log(PM_LOG_ERROR, _("error writing to file '%s': %s\n"),
- realfile, strerror(errno));
- fclose(localf);
- fclose(dlf);
- downloadFreeURL(fileurl);
- goto cleanup;
- }
- }
-
- if(nwritten != nread) {
-
- }
- dl_thisfile += nread;
-
- if(handle->dlcb) {
- handle->dlcb(pkgname, dl_thisfile, ust.size);
- }
- }
-
- downloadFreeURL(fileurl);
- fclose(localf);
- fclose(dlf);
- rename(output, realfile);
- complete = alpm_list_add(complete, fn);
- } else {
- int ret;
- int usepart = 0;
- char *ptr1, *ptr2;
- char origCmd[PATH_MAX];
- char parsedCmd[PATH_MAX] = "";
- char url[PATH_MAX];
- char cwd[PATH_MAX];
-
- /* build the full download url */
- snprintf(url, PATH_MAX, "%s://%s%s", fileurl->scheme,
- fileurl->host, fileurl->doc);
- /* we don't need this anymore */
- downloadFreeURL(fileurl);
-
- /* replace all occurrences of %o with fn.part */
- strncpy(origCmd, handle->xfercommand, sizeof(origCmd));
- ptr1 = origCmd;
- while((ptr2 = strstr(ptr1, "%o"))) {
- usepart = 1;
- ptr2[0] = '\0';
- strcat(parsedCmd, ptr1);
- strcat(parsedCmd, output);
- ptr1 = ptr2 + 2;
- }
- strcat(parsedCmd, ptr1);
- /* replace all occurrences of %u with the download URL */
- strncpy(origCmd, parsedCmd, sizeof(origCmd));
- parsedCmd[0] = '\0';
- ptr1 = origCmd;
- while((ptr2 = strstr(ptr1, "%u"))) {
- ptr2[0] = '\0';
- strcat(parsedCmd, ptr1);
- strcat(parsedCmd, url);
- ptr1 = ptr2 + 2;
- }
- strcat(parsedCmd, ptr1);
- /* cwd to the download directory */
- getcwd(cwd, PATH_MAX);
- if(chdir(localpath)) {
- _alpm_log(PM_LOG_WARNING, _("could not chdir to %s\n"), localpath);
- pm_errno = PM_ERR_CONNECT_FAILED;
- goto cleanup;
- }
- /* execute the parsed command via /bin/sh -c */
- _alpm_log(PM_LOG_DEBUG, "running command: %s\n", parsedCmd);
- ret = system(parsedCmd);
- if(ret == -1) {
- _alpm_log(PM_LOG_WARNING, _("running XferCommand: fork failed!\n"));
- pm_errno = PM_ERR_FORK_FAILED;
- goto cleanup;
- } else if(ret != 0) {
- /* download failed */
- _alpm_log(PM_LOG_DEBUG, "XferCommand command returned non-zero status code (%d)\n", ret);
- } else {
- /* download was successful */
- complete = alpm_list_add(complete, fn);
- if(usepart) {
- rename(output, realfile);
- }
- }
- chdir(cwd);
- }
- }
+int _alpm_download_files(alpm_list_t *files,
+ alpm_list_t *servers, const char *localpath)
+{
+ int ret = 0;
+ alpm_list_t *lp;
- if(alpm_list_count(complete) == alpm_list_count(files)) {
- ret = 0;
- goto cleanup;
+ for(lp = files; lp; lp = lp->next) {
+ char *filename = lp->data;
+ if(_alpm_download_single_file(filename, servers,
+ localpath, 0, NULL) == -1) {
+ ret++;
}
}
-cleanup:
- FREE(pkgname);
- alpm_list_free(complete);
-
return(ret);
}
@@ -374,19 +401,20 @@ cleanup:
*/
char SYMEXPORT *alpm_fetch_pkgurl(const char *url)
{
- /* TODO this method will not work at all right now */
char *filename, *filepath;
const char *cachedir;
+ int ret;
ALPM_LOG_FUNC;
- filename = NULL;
+ filename = get_filename(url);
/* find a valid cache dir to download to */
cachedir = _alpm_filecache_setup();
/* download the file */
- if(_alpm_download_single_file(NULL, NULL, cachedir, 0, NULL)) {
+ ret = download(url, cachedir, 0, NULL);
+ if(ret == -1) {
_alpm_log(PM_LOG_WARNING, _("failed to download %s\n"), url);
return(NULL);
}
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-12-23 02:03:51 +0100