remove dependency on curl binary

fb-upload is now called fb-helper which supports downloading and uploading

Signed-off-by: Florian Pritz <bluewind@xinu.at>

1 files changed, 252 insertions, 0 deletions

diff --git a/fb-helper.c.in b/fb-helper.c.in
new file mode 100644
index 0000000..2d92caa
--- /dev/null
+++ b/fb-helper.c.in
@@ -0,0 +1,252 @@
+/*
+ * Description: This is intended as a helper script for fb only.
+ *
+ * Synopsis: ./fb-upload <pastebin URL> <file>
+ *
+ * Author: Florian "Bluewind" Pritz <flo@xssn.at>
+ *
+ * Licensed under GPLv3
+ *   (see COPYING for full license text)
+ */
+
+#include <stdio.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <libgen.h>
+#include <string.h>
+#include <stdlib.h>
+#include <math.h>
+
+#include <curl/curl.h>
+#include <curl/types.h>
+#include <curl/easy.h>
+
+#define FORMAT_ARRAY_SIZE 5
+
+/* struct which holds the persistent data for progress_callback */
+struct progressData {
+	struct timeval starttime;
+	struct timeval last;
+	double ullast;
+	int lastStringLength;
+};
+
+/* load the contents of file fn into data */
+int load_file(const char *fn, char **data, size_t *data_size)
+{
+	FILE *fp;
+	size_t buf_size = 1024*1024; /* use 1MiB chunks */
+	int size = 0;
+
+	fp = fopen(fn, "rb");
+	if (fp == NULL) {
+		perror("load_file");
+		return 1;
+	}
+
+	/* read the file in buf_size chunks and appened the data to *data */
+	while (!feof(fp)) {
+		*data = realloc(*data, *data_size + buf_size);
+		if (*data == NULL) {
+			perror("load_file");
+			return 1;
+		}
+		size = fread(*data + *data_size, sizeof(char), buf_size, fp);
+		*data_size += size;
+	}
+
+	fclose(fp);
+
+	return 0;
+}
+
+void format_bytes(double bytes, char *buf)
+{
+	double base = 0;
+	int suffix_pos = 0;
+	char suffix[FORMAT_ARRAY_SIZE][4] = {"B", "KiB", "MiB", "GiB", "TiB"};
+
+	base = log(bytes) / log(1024);
+	suffix_pos = (int)floor(base);
+
+	if (suffix_pos >= FORMAT_ARRAY_SIZE)
+		suffix_pos = FORMAT_ARRAY_SIZE-1;
+
+	if (suffix_pos > 0) {
+		snprintf(buf, 64, "%.2f%s", pow(1024, base - suffix_pos), suffix[suffix_pos]);
+	} else {
+		snprintf(buf, 64, "%.2fB", bytes);
+	}
+}
+
+int progress_callback(void *cb_data,
+	double dltotal, double dlnow,
+	double ultotal, double ulnow)
+{
+	struct timeval now;
+	struct progressData *data = (struct progressData *)cb_data;
+	double timeSpent = 0;
+	int printed = 0;
+	char speed[64];
+	char total[64];
+
+	if (0 == ulnow)
+		return 0;
+
+	/* upload complete; clean up */
+	if (ulnow >= ultotal) {
+		fprintf(stderr, "%*s\r", data->lastStringLength + 1, "");
+		return 0;
+	}
+
+	gettimeofday(&now, NULL);
+
+	/* only refresh once a second */
+	if (data->last.tv_sec == now.tv_sec)
+		return 0;
+
+	/* calculate time between this and the last call in seconds */
+	timeSpent =
+		(double)(now.tv_sec - data->last.tv_sec) +
+		(double)(now.tv_usec - data->last.tv_usec) / 1000000.0;
+
+	format_bytes((ulnow - data->ullast) / timeSpent, (char *)&speed);
+	format_bytes(ulnow, (char *)&total);
+
+	/* print the progress */
+	printed = fprintf(stderr,
+		"\r%s/s uploaded: %.1f%% = %s",
+		speed, /* upload speed */
+		ulnow * 100.0 / ultotal, /* percent uploaded */
+		total); /* total data uploaded */
+
+	/* pad the string if the last one was longer to remove left over characters */
+	if (data->lastStringLength > printed)
+		fprintf(stderr, "%*s", data->lastStringLength - printed, "");
+
+	/* save current values for the next run */
+	data->ullast = ulnow;
+	data->last = now;
+	data->lastStringLength = printed;
+
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	CURL *curl;
+	CURLcode res;
+
+	char *userAgent = "fb-client/@VERSION@";
+
+	struct progressData cb_data = {
+		.starttime = {.tv_sec = 0, .tv_usec = 0},
+		.last = {.tv_sec = 0, .tv_usec = 0},
+		.ullast = 0.0,
+		.lastStringLength = 0
+	};
+	struct stat statbuf;
+
+	struct curl_httppost *formpost=NULL;
+	struct curl_httppost *lastptr=NULL;
+	struct curl_slist *headerlist=NULL;
+	static const char buf[] = "Expect:";
+	struct curl_forms forms[4];
+
+	char *mode = NULL;
+	char *data = NULL;
+	char *url = NULL;
+	char *file = NULL;
+	size_t data_size = 0;
+
+	int ret = 0;
+
+	if(argc == 0)
+		return 1;
+
+	mode = argv[1];
+
+	if (strncmp(mode, "u", 1) == 0)
+		file = argv[3];
+
+	url = argv[2];
+
+	if (curl_global_init(CURL_GLOBAL_ALL) != 0) {
+		fprintf(stderr, "Error initializing curl");
+		return 10;
+	}
+
+	if (file) {
+		if(stat(file, &statbuf) == -1) {
+			perror("fb-upload");
+			return 1;
+		}
+
+		/* load files with 0 size (/proc files for example) into memory so we can
+		 * determine their real length */
+		if (statbuf.st_size == 0) {
+			if (load_file(file, &data, &data_size) != 0) {
+				return 1;
+			}
+			forms[0].option = CURLFORM_BUFFER;
+			forms[0].value = basename(file);
+			forms[1].option = CURLFORM_BUFFERPTR;
+			forms[1].value = data;
+			forms[2].option = CURLFORM_BUFFERLENGTH;
+			forms[2].value = (char *)data_size;
+			forms[3].option = CURLFORM_END;
+		} else {
+			forms[0].option = CURLFORM_FILE;
+			forms[0].value = file;
+			forms[1].option = CURLFORM_END;
+		}
+
+		/* Fill in the file upload field */
+		curl_formadd(&formpost,
+			 &lastptr,
+			 CURLFORM_COPYNAME, "file",
+			 CURLFORM_ARRAY, forms,
+			 CURLFORM_END);
+	}
+
+	curl = curl_easy_init();
+	/* initialize custom header list (stating that Expect: 100-continue is not
+		 wanted */
+	headerlist = curl_slist_append(headerlist, buf);
+	if(curl) {
+		/* what URL that receives this POST */
+		curl_easy_setopt(curl, CURLOPT_URL, url);
+		curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
+		curl_easy_setopt(curl, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
+		if (file) {
+			curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0);
+			curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, &cb_data);
+			curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, progress_callback);
+		}
+		curl_easy_setopt(curl, CURLOPT_USERAGENT, userAgent);
+		if (formpost)
+			curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
+		curl_easy_setopt(curl, CURLOPT_LOW_SPEED_LIMIT, (long)1);
+		curl_easy_setopt(curl, CURLOPT_LOW_SPEED_TIME, (long)30);
+		gettimeofday(&cb_data.starttime, NULL);
+		res = curl_easy_perform(curl);
+
+		if (res != 0) {
+			fprintf(stderr, "\n%s\n", curl_easy_strerror(res));
+			ret = 1;
+		}
+
+		/* cleanup */
+		curl_easy_cleanup(curl);
+		if (formpost)
+			curl_formfree(formpost);
+		curl_slist_free_all (headerlist);
+		curl_global_cleanup();
+		free(data);
+	} else {
+		fprintf(stderr, "Error initializing curl");
+		ret = 1;
+	}
+	return ret;
+}