a9ab586a5d
We have deprecated the old environment variable names for quite a
while and now it's time to remove them. Gone are:
SHA1_FILE_DIRECTORIES AUTHOR_DATE AUTHOR_EMAIL AUTHOR_NAME
COMMIT_AUTHOR_EMAIL COMMIT_AUTHOR_NAME SHA1_FILE_DIRECTORY
Signed-off-by: Junio C Hamano <junkio@cox.net>
372 lines
7.7 KiB
C
372 lines
7.7 KiB
C
#include "cache.h"
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#include "commit.h"
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#include "fetch.h"
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#include <curl/curl.h>
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#include <curl/easy.h>
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#if LIBCURL_VERSION_NUM < 0x070704
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#define curl_global_cleanup() do { /* nothing */ } while(0)
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#endif
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#if LIBCURL_VERSION_NUM < 0x070800
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#define curl_global_init(a) do { /* nothing */ } while(0)
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#endif
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static CURL *curl;
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static char *base;
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static SHA_CTX c;
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static z_stream stream;
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static int local;
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static int zret;
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static int curl_ssl_verify;
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struct buffer
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{
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size_t posn;
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size_t size;
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void *buffer;
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};
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static size_t fwrite_buffer(void *ptr, size_t eltsize, size_t nmemb,
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struct buffer *buffer)
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{
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size_t size = eltsize * nmemb;
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if (size > buffer->size - buffer->posn)
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size = buffer->size - buffer->posn;
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memcpy(buffer->buffer + buffer->posn, ptr, size);
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buffer->posn += size;
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return size;
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}
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static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb,
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void *data)
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{
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unsigned char expn[4096];
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size_t size = eltsize * nmemb;
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int posn = 0;
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do {
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ssize_t retval = write(local, ptr + posn, size - posn);
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if (retval < 0)
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return posn;
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posn += retval;
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} while (posn < size);
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stream.avail_in = size;
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stream.next_in = ptr;
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do {
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stream.next_out = expn;
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stream.avail_out = sizeof(expn);
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zret = inflate(&stream, Z_SYNC_FLUSH);
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SHA1_Update(&c, expn, sizeof(expn) - stream.avail_out);
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} while (stream.avail_in && zret == Z_OK);
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return size;
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}
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void prefetch(unsigned char *sha1)
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{
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}
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static int got_indices = 0;
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static struct packed_git *packs = NULL;
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static int fetch_index(unsigned char *sha1)
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{
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char *filename;
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char *url;
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FILE *indexfile;
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if (has_pack_index(sha1))
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return 0;
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if (get_verbosely)
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fprintf(stderr, "Getting index for pack %s\n",
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sha1_to_hex(sha1));
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url = xmalloc(strlen(base) + 64);
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sprintf(url, "%s/objects/pack/pack-%s.idx",
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base, sha1_to_hex(sha1));
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filename = sha1_pack_index_name(sha1);
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indexfile = fopen(filename, "w");
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if (!indexfile)
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return error("Unable to open local file %s for pack index",
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filename);
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curl_easy_setopt(curl, CURLOPT_FILE, indexfile);
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite);
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curl_easy_setopt(curl, CURLOPT_URL, url);
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if (curl_easy_perform(curl)) {
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fclose(indexfile);
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return error("Unable to get pack index %s", url);
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}
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fclose(indexfile);
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return 0;
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}
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static int setup_index(unsigned char *sha1)
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{
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struct packed_git *new_pack;
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if (has_pack_file(sha1))
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return 0; // don't list this as something we can get
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if (fetch_index(sha1))
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return -1;
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new_pack = parse_pack_index(sha1);
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new_pack->next = packs;
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packs = new_pack;
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return 0;
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}
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static int fetch_indices(void)
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{
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unsigned char sha1[20];
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char *url;
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struct buffer buffer;
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char *data;
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int i = 0;
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if (got_indices)
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return 0;
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data = xmalloc(4096);
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buffer.size = 4096;
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buffer.posn = 0;
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buffer.buffer = data;
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if (get_verbosely)
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fprintf(stderr, "Getting pack list\n");
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url = xmalloc(strlen(base) + 21);
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sprintf(url, "%s/objects/info/packs", base);
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curl_easy_setopt(curl, CURLOPT_FILE, &buffer);
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
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curl_easy_setopt(curl, CURLOPT_URL, url);
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if (curl_easy_perform(curl)) {
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return error("Unable to get pack index %s", url);
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}
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do {
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switch (data[i]) {
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case 'P':
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i++;
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if (i + 52 < buffer.posn &&
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!strncmp(data + i, " pack-", 6) &&
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!strncmp(data + i + 46, ".pack\n", 6)) {
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get_sha1_hex(data + i + 6, sha1);
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setup_index(sha1);
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i += 51;
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break;
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}
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default:
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while (data[i] != '\n')
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i++;
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}
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i++;
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} while (i < buffer.posn);
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got_indices = 1;
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return 0;
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}
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static int fetch_pack(unsigned char *sha1)
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{
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char *url;
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struct packed_git *target;
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struct packed_git **lst;
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FILE *packfile;
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char *filename;
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if (fetch_indices())
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return -1;
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target = find_sha1_pack(sha1, packs);
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if (!target)
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return error("Couldn't get %s: not separate or in any pack",
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sha1_to_hex(sha1));
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if (get_verbosely) {
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fprintf(stderr, "Getting pack %s\n",
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sha1_to_hex(target->sha1));
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fprintf(stderr, " which contains %s\n",
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sha1_to_hex(sha1));
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}
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url = xmalloc(strlen(base) + 65);
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sprintf(url, "%s/objects/pack/pack-%s.pack",
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base, sha1_to_hex(target->sha1));
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filename = sha1_pack_name(target->sha1);
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packfile = fopen(filename, "w");
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if (!packfile)
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return error("Unable to open local file %s for pack",
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filename);
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curl_easy_setopt(curl, CURLOPT_FILE, packfile);
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite);
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curl_easy_setopt(curl, CURLOPT_URL, url);
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if (curl_easy_perform(curl)) {
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fclose(packfile);
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return error("Unable to get pack file %s", url);
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}
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fclose(packfile);
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lst = &packs;
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while (*lst != target)
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lst = &((*lst)->next);
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*lst = (*lst)->next;
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install_packed_git(target);
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return 0;
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}
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int fetch(unsigned char *sha1)
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{
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char *hex = sha1_to_hex(sha1);
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char *filename = sha1_file_name(sha1);
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unsigned char real_sha1[20];
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char *url;
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char *posn;
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local = open(filename, O_WRONLY | O_CREAT | O_EXCL, 0666);
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if (local < 0)
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return error("Couldn't open local object %s\n", filename);
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memset(&stream, 0, sizeof(stream));
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inflateInit(&stream);
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SHA1_Init(&c);
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curl_easy_setopt(curl, CURLOPT_FAILONERROR, 1);
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curl_easy_setopt(curl, CURLOPT_FILE, NULL);
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
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url = xmalloc(strlen(base) + 50);
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strcpy(url, base);
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posn = url + strlen(base);
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strcpy(posn, "objects/");
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posn += 8;
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memcpy(posn, hex, 2);
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posn += 2;
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*(posn++) = '/';
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strcpy(posn, hex + 2);
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curl_easy_setopt(curl, CURLOPT_URL, url);
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if (curl_easy_perform(curl)) {
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unlink(filename);
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if (fetch_pack(sha1))
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return error("Tried %s", url);
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return 0;
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}
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close(local);
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inflateEnd(&stream);
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SHA1_Final(real_sha1, &c);
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if (zret != Z_STREAM_END) {
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unlink(filename);
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return error("File %s (%s) corrupt\n", hex, url);
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}
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if (memcmp(sha1, real_sha1, 20)) {
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unlink(filename);
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return error("File %s has bad hash\n", hex);
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}
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pull_say("got %s\n", hex);
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return 0;
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}
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int fetch_ref(char *ref, unsigned char *sha1)
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{
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char *url, *posn;
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char hex[42];
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struct buffer buffer;
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buffer.size = 41;
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buffer.posn = 0;
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buffer.buffer = hex;
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hex[41] = '\0';
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curl_easy_setopt(curl, CURLOPT_FILE, &buffer);
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
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url = xmalloc(strlen(base) + 6 + strlen(ref));
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strcpy(url, base);
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posn = url + strlen(base);
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strcpy(posn, "refs/");
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posn += 5;
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strcpy(posn, ref);
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curl_easy_setopt(curl, CURLOPT_URL, url);
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if (curl_easy_perform(curl))
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return error("Couldn't get %s for %s\n", url, ref);
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hex[40] = '\0';
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get_sha1_hex(hex, sha1);
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return 0;
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}
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int main(int argc, char **argv)
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{
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char *commit_id;
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char *url;
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int arg = 1;
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while (arg < argc && argv[arg][0] == '-') {
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if (argv[arg][1] == 't') {
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get_tree = 1;
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} else if (argv[arg][1] == 'c') {
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get_history = 1;
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} else if (argv[arg][1] == 'a') {
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get_all = 1;
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get_tree = 1;
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get_history = 1;
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} else if (argv[arg][1] == 'v') {
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get_verbosely = 1;
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} else if (argv[arg][1] == 'w') {
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write_ref = argv[arg + 1];
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arg++;
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}
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arg++;
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}
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if (argc < arg + 2) {
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usage("git-http-fetch [-c] [-t] [-a] [-d] [-v] [--recover] [-w ref] commit-id url");
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return 1;
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}
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commit_id = argv[arg];
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url = argv[arg + 1];
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curl_global_init(CURL_GLOBAL_ALL);
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curl = curl_easy_init();
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curl_ssl_verify = getenv("GIT_SSL_NO_VERIFY") ? 0 : 1;
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curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, curl_ssl_verify);
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#if LIBCURL_VERSION_NUM >= 0x070907
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curl_easy_setopt(curl, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
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#endif
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base = url;
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if (pull(commit_id))
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return 1;
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curl_global_cleanup();
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return 0;
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}
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