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-rw-r--r--lib/libalpm/server.c578
1 files changed, 578 insertions, 0 deletions
diff --git a/lib/libalpm/server.c b/lib/libalpm/server.c
new file mode 100644
index 00000000..a0f38c42
--- /dev/null
+++ b/lib/libalpm/server.c
@@ -0,0 +1,578 @@
+/*
+ * server.c
+ *
+ * Copyright (c) 2006 by Miklos Vajna <vmiklos@frugalware.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+ * USA.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <libintl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <time.h>
+#include <sys/time.h>
+#include <ftplib.h>
+
+/* pacman */
+#include "server.h"
+#include "error.h"
+#include "log.h"
+#include "alpm.h"
+#include "util.h"
+#include "handle.h"
+
+extern pmhandle_t *handle;
+FtpCallback pm_dlcb = NULL;
+/* progress bar */
+char *pm_dlfnm=NULL;
+int *pm_dloffset=NULL;
+struct timeval *pm_dlt0=NULL, *pm_dlt=NULL;
+float *pm_dlrate=NULL;
+int *pm_dlxfered1=NULL;
+unsigned char *pm_dleta_h=NULL, *pm_dleta_m=NULL, *pm_dleta_s=NULL;
+
+pmserver_t *_alpm_server_new(char *url)
+{
+ pmserver_t *server;
+ char *ptr;
+
+ server = (pmserver_t *)malloc(sizeof(pmserver_t));
+ if(server == NULL) {
+ _alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes"), sizeof(pmserver_t));
+ RET_ERR(PM_ERR_MEMORY, NULL);
+ }
+
+ memset(server, 0, sizeof(pmserver_t));
+
+ /* parse our special url */
+ ptr = strstr(url, "://");
+ if(ptr == NULL) {
+ RET_ERR(PM_ERR_SERVER_BAD_LOCATION, NULL);
+ }
+ *ptr = '\0';
+ ptr++; ptr++; ptr++;
+ if(ptr == NULL || *ptr == '\0') {
+ RET_ERR(PM_ERR_SERVER_BAD_LOCATION, NULL);
+ }
+ server->protocol = strdup(url);
+ if(!strcmp(server->protocol, "ftp") || !strcmp(server->protocol, "http")) {
+ char *slash;
+ /* split the url into domain and path */
+ slash = strchr(ptr, '/');
+ if(slash == NULL) {
+ /* no path included, default to / */
+ server->path = strdup("/");
+ } else {
+ /* add a trailing slash if we need to */
+ if(slash[strlen(slash)-1] == '/') {
+ server->path = strdup(slash);
+ } else {
+ if((server->path = (char *)malloc(strlen(slash)+2)) == NULL) {
+ _alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes"), sizeof(strlen(slash+2)));
+ RET_ERR(PM_ERR_MEMORY, NULL);
+ }
+ sprintf(server->path, "%s/", slash);
+ }
+ *slash = '\0';
+ }
+ server->server = strdup(ptr);
+ } else if(!strcmp(server->protocol, "file")){
+ /* add a trailing slash if we need to */
+ if(ptr[strlen(ptr)-1] == '/') {
+ server->path = strdup(ptr);
+ } else {
+ server->path = (char *)malloc(strlen(ptr)+2);
+ if(server->path == NULL) {
+ _alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes"), sizeof(strlen(ptr+2)));
+ RET_ERR(PM_ERR_MEMORY, NULL);
+ }
+ sprintf(server->path, "%s/", ptr);
+ }
+ } else {
+ RET_ERR(PM_ERR_SERVER_PROTOCOL_UNSUPPORTED, NULL);
+ }
+
+ return(server);
+}
+
+void _alpm_server_free(void *data)
+{
+ pmserver_t *server = data;
+
+ if(server == NULL) {
+ return;
+ }
+
+ /* free memory */
+ FREE(server->protocol);
+ FREE(server->server);
+ FREE(server->path);
+ free(server);
+}
+
+/*
+ * Download a list of files from a list of servers
+ * - if one server fails, we try the next one in the list
+ *
+ * RETURN: 0 for successful download, 1 on error
+ */
+int _alpm_downloadfiles(PMList *servers, const char *localpath, PMList *files)
+{
+ return(!!_alpm_downloadfiles_forreal(servers, localpath, files, NULL, NULL));
+}
+
+/*
+ * 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. String should be in the form
+ * "YYYYMMDDHHMMSS" to match the form of ftplib's FtpModDate() function.
+ * - if *mtime2 is non-NULL, then it will be filled with the mtime
+ * of the remote file (from MDTM FTP cmd or Last-Modified HTTP header).
+ *
+ * RETURN: 0 for successful download
+ * -1 if the mtimes are identical
+ * 1 on error
+ */
+int _alpm_downloadfiles_forreal(PMList *servers, const char *localpath,
+ PMList *files, const char *mtime1, char *mtime2)
+{
+ int fsz;
+ netbuf *control = NULL;
+ PMList *lp;
+ int done = 0;
+ PMList *complete = NULL;
+ PMList *i;
+
+ if(files == NULL) {
+ return(0);
+ }
+
+ _alpm_log(PM_LOG_DEBUG, _("server check, %d\n"),servers);
+ for(i = servers; i && !done; i = i->next) {
+ _alpm_log(PM_LOG_DEBUG, _("server check, done? %d\n"),done);
+ pmserver_t *server = (pmserver_t*)i->data;
+
+ if(!handle->xfercommand && strcmp(server->protocol, "file")) {
+ if(!strcmp(server->protocol, "ftp") && !handle->proxyhost) {
+ FtpInit();
+ _alpm_log(PM_LOG_DEBUG, _("connecting to %s:21\n"), server->server);
+ if(!FtpConnect(server->server, &control)) {
+ _alpm_log(PM_LOG_WARNING, _("cannot connect to %s\n"), server->server);
+ continue;
+ }
+ if(!FtpLogin("anonymous", "libalpm@guest", control)) {
+ _alpm_log(PM_LOG_WARNING, _("anonymous login failed\n"));
+ FtpQuit(control);
+ continue;
+ }
+ if(!FtpChdir(server->path, control)) {
+ _alpm_log(PM_LOG_WARNING, _("could not cwd to %s: %s\n"), server->path, FtpLastResponse(control));
+ FtpQuit(control);
+ continue;
+ }
+ if(!handle->nopassiveftp) {
+ if(!FtpOptions(FTPLIB_CONNMODE, FTPLIB_PASSIVE, control)) {
+ _alpm_log(PM_LOG_WARNING, _("failed to set passive mode\n"));
+ }
+ } else {
+ _alpm_log(PM_LOG_DEBUG, _("FTP passive mode not set\n"));
+ }
+ } else if(handle->proxyhost) {
+ char *host;
+ unsigned port;
+ host = (handle->proxyhost) ? handle->proxyhost : server->server;
+ port = (handle->proxyport) ? handle->proxyport : 80;
+ if(strchr(host, ':')) {
+ _alpm_log(PM_LOG_DEBUG, _("connecting to %s\n"), host);
+ } else {
+ _alpm_log(PM_LOG_DEBUG, _("connecting to %s:%u\n"), host, port);
+ }
+ if(!HttpConnect(host, port, &control)) {
+ _alpm_log(PM_LOG_WARNING, _("cannot connect to %s\n"), host);
+ continue;
+ }
+ }
+
+ /* set up our progress bar's callback (and idle timeout) */
+ if(strcmp(server->protocol, "file") && control) {
+ if(pm_dlcb) {
+ FtpOptions(FTPLIB_CALLBACK, (long)pm_dlcb, control);
+ } else {
+ _alpm_log(PM_LOG_DEBUG, _("downloadfiles: progress bar's callback is not set\n"));
+ }
+ FtpOptions(FTPLIB_IDLETIME, (long)1000, control);
+ FtpOptions(FTPLIB_CALLBACKARG, (long)&fsz, control);
+ FtpOptions(FTPLIB_CALLBACKBYTES, (10*1024), control);
+ }
+ }
+
+ /* get each file in the list */
+ for(lp = files; lp; lp = lp->next) {
+ char *fn = (char *)lp->data;
+
+ if(_alpm_list_is_strin(fn, complete)) {
+ continue;
+ }
+
+ if(handle->xfercommand && strcmp(server->protocol, "file")) {
+ 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%s", server->protocol, server->server,
+ server->path, fn);
+ /* 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, fn);
+ strcat(parsedCmd, ".part");
+ 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);
+ return(PM_ERR_CONNECT_FAILED);
+ }
+ /* 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"));
+ return(PM_ERR_FORK_FAILED);
+ } 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) {
+ char fnpart[PATH_MAX];
+ /* rename "output.part" file to "output" file */
+ snprintf(fnpart, PATH_MAX, "%s.part", fn);
+ rename(fnpart, fn);
+ }
+ }
+ chdir(cwd);
+ } else {
+ char output[PATH_MAX];
+ unsigned int j;
+ int filedone = 0;
+ char *ptr;
+ struct stat st;
+ snprintf(output, PATH_MAX, "%s/%s.part", localpath, fn);
+ if(pm_dlfnm) {
+ strncpy(pm_dlfnm, fn, 24);
+ }
+ /* drop filename extension */
+ ptr = strstr(fn, PM_EXT_DB);
+ if(pm_dlfnm && ptr && (ptr-fn) < 24) {
+ pm_dlfnm[ptr-fn] = '\0';
+ }
+ ptr = strstr(fn, PM_EXT_PKG);
+ if(ptr && (ptr-fn) < 24) {
+ pm_dlfnm[ptr-fn] = '\0';
+ }
+ if(pm_dlfnm) {
+ for(j = strlen(pm_dlfnm); j < 24; j++) {
+ (pm_dlfnm)[j] = ' ';
+ }
+ pm_dlfnm[24] = '\0';
+ }
+ if(pm_dloffset) {
+ *pm_dloffset = 0;
+ }
+
+ /* ETA setup */
+ if(pm_dlt0 && pm_dlt && pm_dlrate && pm_dlxfered1 && pm_dleta_h && pm_dleta_m && pm_dleta_s) {
+ gettimeofday(pm_dlt0, NULL);
+ *pm_dlt = *pm_dlt0;
+ *pm_dlrate = 0;
+ *pm_dlxfered1 = 0;
+ *pm_dleta_h = 0;
+ *pm_dleta_m = 0;
+ *pm_dleta_s = 0;
+ }
+
+ if(!strcmp(server->protocol, "ftp") && !handle->proxyhost) {
+ if(!FtpSize(fn, &fsz, FTPLIB_IMAGE, control)) {
+ _alpm_log(PM_LOG_WARNING, _("failed to get filesize for %s\n"), fn);
+ }
+ /* check mtimes */
+ if(mtime1) {
+ char fmtime[64];
+ if(!FtpModDate(fn, fmtime, sizeof(fmtime)-1, control)) {
+ _alpm_log(PM_LOG_WARNING, _("failed to get mtime for %s\n"), fn);
+ } else {
+ _alpm_strtrim(fmtime);
+ if(mtime1 && !strcmp(mtime1, fmtime)) {
+ /* mtimes are identical, skip this file */
+ _alpm_log(PM_LOG_DEBUG, _("mtimes are identical, skipping %s\n"), fn);
+ filedone = -1;
+ complete = _alpm_list_add(complete, fn);
+ } else {
+ if(mtime2) {
+ strncpy(mtime2, fmtime, 15); /* YYYYMMDDHHMMSS (=14b) */
+ mtime2[14] = '\0';
+ }
+ }
+ }
+ }
+ if(!filedone) {
+ if(!stat(output, &st)) {
+ *pm_dloffset = (int)st.st_size;
+ if(!FtpRestart(*pm_dloffset, control)) {
+ _alpm_log(PM_LOG_WARNING, _("failed to resume download -- restarting\n"));
+ /* can't resume: */
+ /* unlink the file in order to restart download from scratch */
+ unlink(output);
+ }
+ }
+ if(!FtpGet(output, fn, FTPLIB_IMAGE, control)) {
+ _alpm_log(PM_LOG_WARNING, _("\nfailed downloading %s from %s: %s\n"),
+ fn, server->server, FtpLastResponse(control));
+ /* we leave the partially downloaded file in place so it can be resumed later */
+ } else {
+ _alpm_log(PM_LOG_DEBUG, _("downloaded %s from %s\n"),
+ fn, server->server);
+ filedone = 1;
+ }
+ }
+ } else if(!strcmp(server->protocol, "http") || (handle->proxyhost && strcmp(server->protocol, "file"))) {
+ char src[PATH_MAX];
+ char *host;
+ unsigned port;
+ struct tm fmtime1;
+ struct tm fmtime2;
+ memset(&fmtime1, 0, sizeof(struct tm));
+ memset(&fmtime2, 0, sizeof(struct tm));
+ if(!strcmp(server->protocol, "http") && !handle->proxyhost) {
+ /* HTTP servers hang up after each request (but not proxies), so
+ * we have to re-connect for each file.
+ */
+ host = (handle->proxyhost) ? handle->proxyhost : server->server;
+ port = (handle->proxyhost) ? handle->proxyport : 80;
+ if(strchr(host, ':')) {
+ _alpm_log(PM_LOG_DEBUG, _("connecting to %s\n"), host);
+ } else {
+ _alpm_log(PM_LOG_DEBUG, _("connecting to %s:%u\n"), host, port);
+ }
+ if(!HttpConnect(host, port, &control)) {
+ _alpm_log(PM_LOG_WARNING, _("cannot connect to %s\n"), host);
+ continue;
+ }
+ /* set up our progress bar's callback (and idle timeout) */
+ if(strcmp(server->protocol, "file") && control) {
+ if(pm_dlcb) {
+ FtpOptions(FTPLIB_CALLBACK, (long)pm_dlcb, control);
+ } else {
+ _alpm_log(PM_LOG_DEBUG, _("downloadfiles: progress bar's callback is not set\n"));
+ }
+ FtpOptions(FTPLIB_IDLETIME, (long)1000, control);
+ FtpOptions(FTPLIB_CALLBACKARG, (long)&fsz, control);
+ FtpOptions(FTPLIB_CALLBACKBYTES, (10*1024), control);
+ }
+ }
+
+ if(!stat(output, &st)) {
+ *pm_dloffset = (int)st.st_size;
+ }
+ if(!handle->proxyhost) {
+ snprintf(src, PATH_MAX, "%s%s", server->path, fn);
+ } else {
+ snprintf(src, PATH_MAX, "%s://%s%s%s", server->protocol, server->server, server->path, fn);
+ }
+ if(mtime1 && strlen(mtime1)) {
+ struct tm tmref;
+ time_t t, tref;
+ int diff;
+ /* date conversion from YYYYMMDDHHMMSS to "rfc1123-date" */
+ sscanf(mtime1, "%4d%2d%2d%2d%2d%2d",
+ &fmtime1.tm_year, &fmtime1.tm_mon, &fmtime1.tm_mday,
+ &fmtime1.tm_hour, &fmtime1.tm_min, &fmtime1.tm_sec);
+ fmtime1.tm_year -= 1900;
+ fmtime1.tm_mon--;
+ /* compute the week day because some web servers (like lighttpd) need them. */
+ /* we set tmref to "Thu, 01 Jan 1970 00:00:00" */
+ memset(&tmref, 0, sizeof(struct tm));
+ tmref.tm_mday = 1;
+ tref = mktime(&tmref);
+ /* then we compute the difference with mtime1 */
+ t = mktime(&fmtime1);
+ diff = ((t-tref)/3600/24)%7;
+ fmtime1.tm_wday = diff+(diff >= 3 ? -3 : 4);
+
+ }
+ fmtime2.tm_year = 0;
+ if(!HttpGet(server->server, output, src, &fsz, control, *pm_dloffset,
+ (mtime1) ? &fmtime1 : NULL, (mtime2) ? &fmtime2 : NULL)) {
+ if(strstr(FtpLastResponse(control), "304")) {
+ _alpm_log(PM_LOG_DEBUG, _("mtimes are identical, skipping %s\n"), fn);
+ filedone = -1;
+ complete = _alpm_list_add(complete, fn);
+ } else {
+ _alpm_log(PM_LOG_WARNING, _("\nfailed downloading %s from %s: %s\n"),
+ src, server->server, FtpLastResponse(control));
+ /* we leave the partially downloaded file in place so it can be resumed later */
+ }
+ } else {
+ if(mtime2) {
+ if(fmtime2.tm_year) {
+ /* date conversion from "rfc1123-date" to YYYYMMDDHHMMSS */
+ sprintf(mtime2, "%4d%02d%02d%02d%02d%02d",
+ fmtime2.tm_year+1900, fmtime2.tm_mon+1, fmtime2.tm_mday,
+ fmtime2.tm_hour, fmtime2.tm_min, fmtime2.tm_sec);
+ } else {
+ _alpm_log(PM_LOG_WARNING, _("failed to get mtime for %s\n"), fn);
+ }
+ }
+ filedone = 1;
+ }
+ } else if(!strcmp(server->protocol, "file")) {
+ char src[PATH_MAX];
+ snprintf(src, PATH_MAX, "%s%s", server->path, fn);
+ _alpm_log(PM_LOG_DEBUG, _("copying %s to %s/%s\n"), src, localpath, fn);
+ /* local repository, just copy the file */
+ if(_alpm_copyfile(src, output)) {
+ _alpm_log(PM_LOG_WARNING, _("failed copying %s\n"), src);
+ } else {
+ filedone = 1;
+ }
+ }
+
+ if(filedone > 0) {
+ char completefile[PATH_MAX];
+ if(!strcmp(server->protocol, "file")) {
+ EVENT(handle->trans, PM_TRANS_EVT_RETRIEVE_LOCAL, pm_dlfnm, server->path);
+ } else if(pm_dlcb) {
+ pm_dlcb(control, fsz-*pm_dloffset, &fsz);
+ }
+ complete = _alpm_list_add(complete, fn);
+ /* rename "output.part" file to "output" file */
+ snprintf(completefile, PATH_MAX, "%s/%s", localpath, fn);
+ rename(output, completefile);
+ } else if(filedone < 0) {
+ return(-1);
+ }
+ }
+ }
+ if(!handle->xfercommand) {
+ if(!strcmp(server->protocol, "ftp") && !handle->proxyhost) {
+ FtpQuit(control);
+ } else if(!strcmp(server->protocol, "http") || (handle->proxyhost && strcmp(server->protocol, "file"))) {
+ HttpQuit(control);
+ }
+ }
+
+ if(_alpm_list_count(complete) == _alpm_list_count(files)) {
+ done = 1;
+ }
+ }
+
+ _alpm_log(PM_LOG_DEBUG, _("end _alpm_downloadfiles_forreal - return %d"),!done);
+ return(!done);
+}
+
+char *_alpm_fetch_pkgurl(char *target)
+{
+ char spath[PATH_MAX];
+ char url[PATH_MAX];
+ char *host, *path, *fn;
+ struct stat buf;
+
+ strncpy(url, target, PATH_MAX);
+ host = strstr(url, "://");
+ *host = '\0';
+ host += 3;
+ path = strchr(host, '/');
+ *path = '\0';
+ path++;
+ fn = strrchr(path, '/');
+ if(fn) {
+ *fn = '\0';
+ if(path[0] == '/') {
+ snprintf(spath, PATH_MAX, "%s/", path);
+ } else {
+ snprintf(spath, PATH_MAX, "/%s/", path);
+ }
+ fn++;
+ } else {
+ fn = path;
+ strcpy(spath, "/");
+ }
+
+ /* do not download the file if it exists in the current dir
+ */
+ if(stat(fn, &buf) == 0) {
+ _alpm_log(PM_LOG_DEBUG, _(" %s is already in the current directory\n"), fn);
+ } else {
+ pmserver_t *server;
+ PMList *servers = NULL;
+ PMList *files;
+
+ if((server = (pmserver_t *)malloc(sizeof(pmserver_t))) == NULL) {
+ _alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes"), sizeof(pmserver_t));
+ return(NULL);
+ }
+ server->protocol = url;
+ server->server = host;
+ server->path = spath;
+ servers = _alpm_list_add(servers, server);
+
+ files = _alpm_list_add(NULL, fn);
+ if(_alpm_downloadfiles(servers, ".", files)) {
+ _alpm_log(PM_LOG_WARNING, _("failed to download %s\n"), target);
+ return(NULL);
+ }
+ FREELISTPTR(files);
+
+ FREELIST(servers);
+ }
+
+ /* return the target with the raw filename, no URL */
+ #if defined(__OpenBSD__) || defined(__APPLE__)
+ return(strdup(fn));
+ #else
+ return(strndup(fn, PATH_MAX));
+ #endif
+}
+
+/* vim: set ts=2 sw=2 noet: */

Copyright © 2002-2022 Judd Vinet and Aaron Griffin. Copyright © 2022 Erich Eckner.
The Arch Linux name and logo are recognized trademarks. Some rights reserved. The registered trademark Linux® is used pursuant to a sublicense from LMI, the exclusive licensee of Linus Torvalds, owner of the mark on a world-wide basis.