[PATCH] Update documentation for git-get-tar-commit-id
[gitweb.git] / http-pull.c
index ec53dad8efbe6e7734b75eaba8821ac290a5abbb..e70ab39c03dc82e7f90afa43f8271ca4e3ae8206 100644 (file)
@@ -6,6 +6,13 @@
 #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 char *base;
@@ -16,6 +23,8 @@ static z_stream stream;
 static int local;
 static int zret;
 
+static int curl_ssl_verify;
+
 struct buffer
 {
         size_t posn;
@@ -24,7 +33,8 @@ struct buffer
 };
 
 static size_t fwrite_buffer(void *ptr, size_t eltsize, size_t nmemb,
-                            struct buffer *buffer) {
+                            struct buffer *buffer)
+{
         size_t size = eltsize * nmemb;
         if (size > buffer->size - buffer->posn)
                 size = buffer->size - buffer->posn;
@@ -33,8 +43,9 @@ static size_t fwrite_buffer(void *ptr, size_t eltsize, size_t nmemb,
         return size;
 }
 
-static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb, 
-                              void *data) {
+static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb,
+                              void *data)
+{
        unsigned char expn[4096];
        size_t size = eltsize * nmemb;
        int posn = 0;
@@ -56,6 +67,172 @@ static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb,
        return size;
 }
 
+void prefetch(unsigned char *sha1)
+{
+}
+
+static int got_indices = 0;
+
+static struct packed_git *packs = NULL;
+
+static int fetch_index(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(base) + 64);
+       sprintf(url, "%s/objects/pack/pack-%s.idx",
+               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);
+       
+       if (curl_easy_perform(curl)) {
+               fclose(indexfile);
+               return error("Unable to get pack index %s", url);
+       }
+
+       fclose(indexfile);
+       return 0;
+}
+
+static int setup_index(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(sha1))
+               return -1;
+
+       new_pack = parse_pack_index(sha1);
+       new_pack->next = packs;
+       packs = new_pack;
+       return 0;
+}
+
+static int fetch_indices(void)
+{
+       unsigned char sha1[20];
+       char *url;
+       struct buffer buffer;
+       char *data;
+       int i = 0;
+
+       if (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(base) + 21);
+       sprintf(url, "%s/objects/info/packs", 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 error("Unable to get pack index %s", url);
+       }
+
+       do {
+               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(sha1);
+                               i += 51;
+                               break;
+                       }
+               default:
+                       while (data[i] != '\n')
+                               i++;
+               }
+               i++;
+       } while (i < buffer.posn);
+
+       got_indices = 1;
+       return 0;
+}
+
+static int fetch_pack(unsigned char *sha1)
+{
+       char *url;
+       struct packed_git *target;
+       struct packed_git **lst;
+       FILE *packfile;
+       char *filename;
+
+       if (fetch_indices())
+               return -1;
+       target = find_sha1_pack(sha1, packs);
+       if (!target)
+               return error("Couldn't get %s: not separate or in any pack",
+                            sha1_to_hex(sha1));
+
+       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(base) + 65);
+       sprintf(url, "%s/objects/pack/pack-%s.pack",
+               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);
+       
+       if (curl_easy_perform(curl)) {
+               fclose(packfile);
+               return error("Unable to get pack file %s", url);
+       }
+
+       fclose(packfile);
+
+       lst = &packs;
+       while (*lst != target)
+               lst = &((*lst)->next);
+       *lst = (*lst)->next;
+
+       install_packed_git(target);
+
+       return 0;
+}
+
 int fetch(unsigned char *sha1)
 {
        char *hex = sha1_to_hex(sha1);
@@ -67,7 +244,7 @@ int fetch(unsigned char *sha1)
        local = open(filename, O_WRONLY | O_CREAT | O_EXCL, 0666);
 
        if (local < 0)
-               return error("Couldn't open %s\n", filename);
+               return error("Couldn't open local object %s\n", filename);
 
        memset(&stream, 0, sizeof(stream));
 
@@ -75,6 +252,7 @@ int fetch(unsigned char *sha1)
 
        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);
 
@@ -90,8 +268,12 @@ int fetch(unsigned char *sha1)
 
        curl_easy_setopt(curl, CURLOPT_URL, url);
 
-       if (curl_easy_perform(curl))
-               return error("Couldn't get %s for %s\n", url, hex);
+       if (curl_easy_perform(curl)) {
+               unlink(filename);
+               if (fetch_pack(sha1))
+                       return error("Tried %s", url);
+               return 0;
+       }
 
        close(local);
        inflateEnd(&stream);
@@ -150,10 +332,6 @@ int main(int argc, char **argv)
                        get_tree = 1;
                } else if (argv[arg][1] == 'c') {
                        get_history = 1;
-               } else if (argv[arg][1] == 'd') {
-                       get_delta = 0;
-               } else if (!strcmp(argv[arg], "--recover")) {
-                       get_delta = 2;
                } else if (argv[arg][1] == 'a') {
                        get_all = 1;
                        get_tree = 1;
@@ -177,6 +355,12 @@ int main(int argc, char **argv)
 
        curl = curl_easy_init();
 
+       curl_ssl_verify = gitenv("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
+
        base = url;
 
        if (pull(commit_id))