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7131b7ac87
pacman/lib/libalpm/server.c
Aaron Griffin 7131b7ac87 A handful of minor changes: 
* Removed the PMList typedef, in favor of the same naming scheme other
      structs use 'pmlist_t'
    * Added a time stamp on debug output, to make it more informational
    * Moved alpm_db_register to _alpm_db_register, making the public function
      not take a callback parameter
2006-10-20 06:26:55 +00:00

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/*
* 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_t *servers, const char *localpath, pmlist_t *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_t *servers, const char *localpath,
pmlist_t *files, const char *mtime1, char *mtime2)
{
int fsz;
netbuf *control = NULL;
pmlist_t *lp;
int done = 0;
pmlist_t *complete = NULL;
pmlist_t *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, 22);
}
/* drop filename extension */
ptr = strstr(fn, PM_EXT_DB);
if(pm_dlfnm && ptr && (ptr-fn) < 22) {
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 < 22; j++) {
(pm_dlfnm)[j] = ' ';
}
pm_dlfnm[22] = '\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_t *servers = NULL;
pmlist_t *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: */
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