#include "cache.h"
-#include "commit.h"
+#include "exec_cmd.h"
+#include "walker.h"
-#include "fetch.h"
+static const char http_fetch_usage[] = "git http-fetch "
+"[-c] [-t] [-a] [-v] [--recover] [-w ref] [--stdin] commit-id url";
-#include <curl/curl.h>
-#include <curl/easy.h>
-
-#if LIBCURL_VERSION_NUM < 0x070704
-#define curl_global_cleanup() do { /* nothing */ } while(0)
-#endif
-#if LIBCURL_VERSION_NUM < 0x070800
-#define curl_global_init(a) do { /* nothing */ } while(0)
-#endif
-
-static CURL *curl;
-static struct curl_slist *no_pragma_header;
-
-static char *initial_base;
-
-struct alt_base
-{
- char *base;
- int got_indices;
- struct packed_git *packs;
- struct alt_base *next;
-};
-
-struct alt_base *alt = NULL;
-
-static SHA_CTX c;
-static z_stream stream;
-
-static int local;
-static int zret;
-
-static int curl_ssl_verify;
-
-struct buffer
-{
- size_t posn;
- size_t size;
- void *buffer;
-};
-
-static size_t fwrite_buffer(void *ptr, size_t eltsize, size_t nmemb,
- struct buffer *buffer)
-{
- size_t size = eltsize * nmemb;
- if (size > buffer->size - buffer->posn)
- size = buffer->size - buffer->posn;
- memcpy(buffer->buffer + buffer->posn, ptr, size);
- buffer->posn += size;
- return size;
-}
-
-static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb,
- void *data)
+int main(int argc, const char **argv)
{
- unsigned char expn[4096];
- size_t size = eltsize * nmemb;
- int posn = 0;
- do {
- ssize_t retval = write(local, ptr + posn, size - posn);
- if (retval < 0)
- return posn;
- posn += retval;
- } while (posn < size);
-
- stream.avail_in = size;
- stream.next_in = ptr;
- do {
- stream.next_out = expn;
- stream.avail_out = sizeof(expn);
- zret = inflate(&stream, Z_SYNC_FLUSH);
- SHA1_Update(&c, expn, sizeof(expn) - stream.avail_out);
- } while (stream.avail_in && zret == Z_OK);
- return size;
-}
-
-void prefetch(unsigned char *sha1)
-{
-}
-
-static int got_alternates = 0;
-
-static int fetch_index(struct alt_base *repo, unsigned char *sha1)
-{
- char *filename;
- char *url;
-
- FILE *indexfile;
-
- if (has_pack_index(sha1))
- return 0;
-
- if (get_verbosely)
- fprintf(stderr, "Getting index for pack %s\n",
- sha1_to_hex(sha1));
-
- url = xmalloc(strlen(repo->base) + 64);
- sprintf(url, "%s/objects/pack/pack-%s.idx",
- repo->base, sha1_to_hex(sha1));
-
- filename = sha1_pack_index_name(sha1);
- indexfile = fopen(filename, "w");
- if (!indexfile)
- return error("Unable to open local file %s for pack index",
- filename);
-
- curl_easy_setopt(curl, CURLOPT_FILE, indexfile);
- curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite);
- curl_easy_setopt(curl, CURLOPT_URL, url);
- curl_easy_setopt(curl, CURLOPT_HTTPHEADER, no_pragma_header);
-
- if (curl_easy_perform(curl)) {
- fclose(indexfile);
- return error("Unable to get pack index %s", url);
- }
-
- fclose(indexfile);
- return 0;
-}
-
-static int setup_index(struct alt_base *repo, unsigned char *sha1)
-{
- struct packed_git *new_pack;
- if (has_pack_file(sha1))
- return 0; // don't list this as something we can get
-
- if (fetch_index(repo, sha1))
- return -1;
-
- new_pack = parse_pack_index(sha1);
- new_pack->next = repo->packs;
- repo->packs = new_pack;
- return 0;
-}
-
-static int fetch_alternates(char *base)
-{
- int ret = 0;
- struct buffer buffer;
- char *url;
- char *data;
- int i = 0;
- int http_specific = 1;
- if (got_alternates)
- return 0;
- data = xmalloc(4096);
- buffer.size = 4095;
- buffer.posn = 0;
- buffer.buffer = data;
-
- if (get_verbosely)
- fprintf(stderr, "Getting alternates list\n");
-
- url = xmalloc(strlen(base) + 31);
- sprintf(url, "%s/objects/info/http-alternates", base);
-
- curl_easy_setopt(curl, CURLOPT_FILE, &buffer);
- curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
- curl_easy_setopt(curl, CURLOPT_URL, url);
-
- if (curl_easy_perform(curl) || !buffer.posn) {
- http_specific = 0;
-
- sprintf(url, "%s/objects/info/alternates", base);
-
- curl_easy_setopt(curl, CURLOPT_FILE, &buffer);
- curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
- curl_easy_setopt(curl, CURLOPT_URL, url);
-
- if (curl_easy_perform(curl)) {
- return 0;
- }
- }
-
- data[buffer.posn] = '\0';
-
- while (i < buffer.posn) {
- int posn = i;
- while (posn < buffer.posn && data[posn] != '\n')
- posn++;
- if (data[posn] == '\n') {
- int okay = 0;
- int serverlen = 0;
- struct alt_base *newalt;
- char *target = NULL;
- if (data[i] == '/') {
- serverlen = strchr(base + 8, '/') - base;
- okay = 1;
- } else if (!memcmp(data + i, "../", 3)) {
- i += 3;
- serverlen = strlen(base);
- while (i + 2 < posn &&
- !memcmp(data + i, "../", 3)) {
- do {
- serverlen--;
- } while (serverlen &&
- base[serverlen - 1] != '/');
- i += 3;
- }
- // If the server got removed, give up.
- okay = strchr(base, ':') - base + 3 <
- serverlen;
- } else if (http_specific) {
- char *colon = strchr(data + i, ':');
- char *slash = strchr(data + i, '/');
- if (colon && slash && colon < data + posn &&
- slash < data + posn && colon < slash) {
- okay = 1;
- }
- }
- // skip 'objects' at end
- if (okay) {
- target = xmalloc(serverlen + posn - i - 6);
- strncpy(target, base, serverlen);
- strncpy(target + serverlen, data + i,
- posn - i - 7);
- target[serverlen + posn - i - 7] = '\0';
- if (get_verbosely)
- fprintf(stderr,
- "Also look at %s\n", target);
- newalt = xmalloc(sizeof(*newalt));
- newalt->next = alt;
- newalt->base = target;
- newalt->got_indices = 0;
- newalt->packs = NULL;
- alt = newalt;
- ret++;
- }
- }
- i = posn + 1;
- }
- got_alternates = 1;
-
- return ret;
-}
-
-static int fetch_indices(struct alt_base *repo)
-{
- unsigned char sha1[20];
- char *url;
- struct buffer buffer;
- char *data;
- int i = 0;
-
- if (repo->got_indices)
- return 0;
-
- data = xmalloc(4096);
- buffer.size = 4096;
- buffer.posn = 0;
- buffer.buffer = data;
-
- if (get_verbosely)
- fprintf(stderr, "Getting pack list\n");
-
- url = xmalloc(strlen(repo->base) + 21);
- sprintf(url, "%s/objects/info/packs", repo->base);
-
- curl_easy_setopt(curl, CURLOPT_FILE, &buffer);
- curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
- curl_easy_setopt(curl, CURLOPT_URL, url);
- curl_easy_setopt(curl, CURLOPT_HTTPHEADER, NULL);
-
- if (curl_easy_perform(curl)) {
- return -1;
- }
-
- while (i < buffer.posn) {
- switch (data[i]) {
- case 'P':
- i++;
- if (i + 52 < buffer.posn &&
- !strncmp(data + i, " pack-", 6) &&
- !strncmp(data + i + 46, ".pack\n", 6)) {
- get_sha1_hex(data + i + 6, sha1);
- setup_index(repo, sha1);
- i += 51;
- break;
- }
- default:
- while (data[i] != '\n')
- i++;
- }
- i++;
- }
-
- repo->got_indices = 1;
- return 0;
-}
-
-static int fetch_pack(struct alt_base *repo, unsigned char *sha1)
-{
- char *url;
- struct packed_git *target;
- struct packed_git **lst;
- FILE *packfile;
- char *filename;
-
- if (fetch_indices(repo))
- return -1;
- target = find_sha1_pack(sha1, repo->packs);
- if (!target)
- return -1;
-
- if (get_verbosely) {
- fprintf(stderr, "Getting pack %s\n",
- sha1_to_hex(target->sha1));
- fprintf(stderr, " which contains %s\n",
- sha1_to_hex(sha1));
- }
-
- url = xmalloc(strlen(repo->base) + 65);
- sprintf(url, "%s/objects/pack/pack-%s.pack",
- repo->base, sha1_to_hex(target->sha1));
-
- filename = sha1_pack_name(target->sha1);
- packfile = fopen(filename, "w");
- if (!packfile)
- return error("Unable to open local file %s for pack",
- filename);
-
- curl_easy_setopt(curl, CURLOPT_FILE, packfile);
- curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite);
- curl_easy_setopt(curl, CURLOPT_URL, url);
- curl_easy_setopt(curl, CURLOPT_HTTPHEADER, no_pragma_header);
-
- if (curl_easy_perform(curl)) {
- fclose(packfile);
- return error("Unable to get pack file %s", url);
- }
-
- fclose(packfile);
-
- lst = &repo->packs;
- while (*lst != target)
- lst = &((*lst)->next);
- *lst = (*lst)->next;
-
- install_packed_git(target);
-
- return 0;
-}
-
-int fetch_object(struct alt_base *repo, unsigned char *sha1)
-{
- char *hex = sha1_to_hex(sha1);
- char *filename = sha1_file_name(sha1);
- unsigned char real_sha1[20];
- char tmpfile[PATH_MAX];
- int ret;
- char *url;
- char *posn;
-
- snprintf(tmpfile, sizeof(tmpfile), "%s/obj_XXXXXX",
- get_object_directory());
-
- local = mkstemp(tmpfile);
- if (local < 0)
- return error("Couldn't create temporary file %s for %s: %s\n",
- tmpfile, filename, strerror(errno));
-
- memset(&stream, 0, sizeof(stream));
-
- inflateInit(&stream);
-
- SHA1_Init(&c);
-
- curl_easy_setopt(curl, CURLOPT_FAILONERROR, 1);
- curl_easy_setopt(curl, CURLOPT_FILE, NULL);
- curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
- curl_easy_setopt(curl, CURLOPT_HTTPHEADER, no_pragma_header);
-
- url = xmalloc(strlen(repo->base) + 50);
- strcpy(url, repo->base);
- posn = url + strlen(repo->base);
- strcpy(posn, "objects/");
- posn += 8;
- memcpy(posn, hex, 2);
- posn += 2;
- *(posn++) = '/';
- strcpy(posn, hex + 2);
-
- curl_easy_setopt(curl, CURLOPT_URL, url);
-
- if (curl_easy_perform(curl)) {
- unlink(filename);
- return -1;
- }
-
- fchmod(local, 0444);
- close(local);
- inflateEnd(&stream);
- SHA1_Final(real_sha1, &c);
- if (zret != Z_STREAM_END) {
- unlink(tmpfile);
- return error("File %s (%s) corrupt\n", hex, url);
- }
- if (memcmp(sha1, real_sha1, 20)) {
- unlink(tmpfile);
- return error("File %s has bad hash\n", hex);
- }
- ret = link(tmpfile, filename);
- if (ret < 0) {
- /* Same Coda hack as in write_sha1_file(sha1_file.c) */
- ret = errno;
- if (ret == EXDEV && !rename(tmpfile, filename))
- goto out;
- }
- unlink(tmpfile);
- if (ret) {
- if (ret != EEXIST)
- return error("unable to write sha1 filename %s: %s",
- filename, strerror(ret));
- }
- out:
- pull_say("got %s\n", hex);
- return 0;
-}
-
-int fetch(unsigned char *sha1)
-{
- struct alt_base *altbase = alt;
- while (altbase) {
- if (!fetch_object(altbase, sha1))
- return 0;
- if (!fetch_pack(altbase, sha1))
- return 0;
- if (fetch_alternates(altbase->base) > 0) {
- altbase = alt;
- continue;
- }
- altbase = altbase->next;
- }
- return error("Unable to find %s under %s\n", sha1_to_hex(sha1),
- initial_base);
-}
-
-int fetch_ref(char *ref, unsigned char *sha1)
-{
- char *url, *posn;
- char hex[42];
- struct buffer buffer;
- char *base = initial_base;
- buffer.size = 41;
- buffer.posn = 0;
- buffer.buffer = hex;
- hex[41] = '\0';
-
- curl_easy_setopt(curl, CURLOPT_FILE, &buffer);
- curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
- curl_easy_setopt(curl, CURLOPT_HTTPHEADER, NULL);
-
- url = xmalloc(strlen(base) + 6 + strlen(ref));
- strcpy(url, base);
- posn = url + strlen(base);
- strcpy(posn, "refs/");
- posn += 5;
- strcpy(posn, ref);
-
- curl_easy_setopt(curl, CURLOPT_URL, url);
-
- if (curl_easy_perform(curl))
- return error("Couldn't get %s for %s\n", url, ref);
-
- hex[40] = '\0';
- get_sha1_hex(hex, sha1);
- return 0;
-}
-
-int main(int argc, char **argv)
-{
- char *commit_id;
- char *url;
+ const char *prefix;
+ struct walker *walker;
+ int commits_on_stdin = 0;
+ int commits;
+ const char **write_ref = NULL;
+ char **commit_id;
+ const char *url;
+ char *rewritten_url = NULL;
int arg = 1;
+ int rc = 0;
+ int get_tree = 0;
+ int get_history = 0;
+ int get_all = 0;
+ int get_verbosely = 0;
+ int get_recover = 0;
+
+ git_extract_argv0_path(argv[0]);
while (arg < argc && argv[arg][0] == '-') {
if (argv[arg][1] == 't') {
} else if (argv[arg][1] == 'v') {
get_verbosely = 1;
} else if (argv[arg][1] == 'w') {
- write_ref = argv[arg + 1];
+ write_ref = &argv[arg + 1];
arg++;
+ } else if (argv[arg][1] == 'h') {
+ usage(http_fetch_usage);
+ } else if (!strcmp(argv[arg], "--recover")) {
+ get_recover = 1;
+ } else if (!strcmp(argv[arg], "--stdin")) {
+ commits_on_stdin = 1;
}
arg++;
}
- if (argc < arg + 2) {
- usage("git-http-fetch [-c] [-t] [-a] [-d] [-v] [--recover] [-w ref] commit-id url");
- return 1;
+ if (argc != arg + 2 - commits_on_stdin)
+ usage(http_fetch_usage);
+ if (commits_on_stdin) {
+ commits = walker_targets_stdin(&commit_id, &write_ref);
+ } else {
+ commit_id = (char **) &argv[arg++];
+ commits = 1;
}
- commit_id = argv[arg];
- url = argv[arg + 1];
+ url = argv[arg];
+
+ prefix = setup_git_directory();
- curl_global_init(CURL_GLOBAL_ALL);
+ git_config(git_default_config, NULL);
+
+ if (url && url[strlen(url)-1] != '/') {
+ rewritten_url = xmalloc(strlen(url)+2);
+ strcpy(rewritten_url, url);
+ strcat(rewritten_url, "/");
+ url = rewritten_url;
+ }
- curl = curl_easy_init();
- no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
+ walker = get_http_walker(url, NULL);
+ walker->get_tree = get_tree;
+ walker->get_history = get_history;
+ walker->get_all = get_all;
+ walker->get_verbosely = get_verbosely;
+ walker->get_recover = get_recover;
- curl_ssl_verify = getenv("GIT_SSL_NO_VERIFY") ? 0 : 1;
- curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, curl_ssl_verify);
-#if LIBCURL_VERSION_NUM >= 0x070907
- curl_easy_setopt(curl, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
-#endif
+ rc = walker_fetch(walker, commits, commit_id, write_ref, url);
+
+ if (commits_on_stdin)
+ walker_targets_free(commits, commit_id, write_ref);
+
+ if (walker->corrupt_object_found) {
+ fprintf(stderr,
+"Some loose object were found to be corrupt, but they might be just\n"
+"a false '404 Not Found' error message sent with incorrect HTTP\n"
+"status code. Suggest running 'git fsck'.\n");
+ }
- alt = xmalloc(sizeof(*alt));
- alt->base = url;
- alt->got_indices = 0;
- alt->packs = NULL;
- alt->next = NULL;
- initial_base = url;
+ walker_free(walker);
- if (pull(commit_id))
- return 1;
+ free(rewritten_url);
- curl_slist_free_all(no_pragma_header);
- curl_global_cleanup();
- return 0;
+ return rc;
}