http-pull is a program that downloads from a (normal) HTTP server a commit
and all of the tree and blob objects it refers to (but not other commits,
etc.). Options could be used to make it download a larger or different
selection of objects.
Signed-Off-By: Daniel Barkalow <[EMAIL PROTECTED]>
Index: Makefile
===================================================================
--- 45f926575d2c44072bfcf2317dbf3f0fbb513a4e/Makefile (mode:100644
sha1:346e3850de026485802e41e16a1180be2df85e4a)
+++ 3eae85f66143160a26f5545d197862c89e2a8fb8/Makefile (mode:100644
sha1:0e84e3cd12f836602b420c197e08fabefe975493)
@@ -14,7 +17,7 @@
PROG= update-cache show-diff init-db write-tree read-tree commit-tree \
cat-file fsck-cache checkout-cache diff-tree rev-tree show-files \
- check-files ls-tree merge-base
+ check-files ls-tree http-pull merge-base
SCRIPT= parent-id tree-id git gitXnormid.sh gitadd.sh gitaddremote.sh \
gitcommit.sh gitdiff-do gitdiff.sh gitlog.sh gitls.sh gitlsobj.sh \
@@ -35,6 +38,7 @@
LIBS= -lssl -lz
+http-pull: LIBS += -lcurl
$(PROG):%: %.o $(COMMON)
$(CC) $(CFLAGS) -o $@ $^ $(LIBS)
Index: README
===================================================================
--- 45f926575d2c44072bfcf2317dbf3f0fbb513a4e/README (mode:100664
sha1:0170eafb60ad9009ca41c6536cecd6d1fdee5b86)
+++ 3eae85f66143160a26f5545d197862c89e2a8fb8/README (mode:100664
sha1:921d552d810394e665323ec82b4826914918689c)
@@ -120,7 +120,7 @@
diff, patch
libssl
rsync
-
+ curl (later than 7.7, according to the docs)
The "core GIT"
Index: http-pull.c
===================================================================
--- /dev/null (tree:45f926575d2c44072bfcf2317dbf3f0fbb513a4e)
+++ 3eae85f66143160a26f5545d197862c89e2a8fb8/http-pull.c (mode:100644
sha1:7ba4ad67f6dac34addb537ee147ae3de0550a484)
@@ -0,0 +1,139 @@
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include "cache.h"
+#include "revision.h"
+#include <errno.h>
+#include <stdio.h>
+
+#include <curl/curl.h>
+#include <curl/easy.h>
+
+static CURL *curl;
+
+static char *base;
+
+static int fetch(unsigned char *sha1)
+{
+ char *hex = sha1_to_hex(sha1);
+ char *filename = sha1_file_name(sha1);
+
+ char *url;
+ char *posn;
+ FILE *local;
+
+ if (!access(filename, R_OK)) {
+ return 0;
+ }
+
+ local = fopen(filename, "w");
+
+ if (!local) {
+ return error("Couldn't open %s", filename);
+ }
+
+ curl_easy_setopt(curl, CURLOPT_FILE, local);
+
+ url = malloc(strlen(base) + 50);
+ strcpy(url, base);
+ posn = url + strlen(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)) {
+ fclose(local);
+ unlink(filename);
+ return error("Error downloading %s from %s",
+ sha1_to_hex(sha1), url);
+ }
+
+ fclose(local);
+
+ return 0;
+}
+
+static int process_tree(unsigned char *sha1)
+{
+ void *buffer;
+ unsigned long size;
+ char type[20];
+
+ buffer = read_sha1_file(sha1, type, &size);
+ if (!buffer)
+ return error("Couldn't read %s.",
+ sha1_to_hex(sha1));
+ if (strcmp(type, "tree"))
+ return error("Expected %s to be a tree, but was a %s.",
+ sha1_to_hex(sha1), type);
+ while (size) {
+ int len = strlen(buffer) + 1;
+ unsigned char *sha1 = buffer + len;
+ unsigned int mode;
+ int retval;
+
+ if (size < len + 20 || sscanf(buffer, "%o", &mode) != 1)
+ return error("Invalid tree object");
+
+ buffer = sha1 + 20;
+ size -= len + 20;
+
+ retval = fetch(sha1);
+ if (retval)
+ return retval;
+
+ if (S_ISDIR(mode)) {
+ retval = process_tree(sha1);
+ if (retval)
+ return retval;
+ }
+ }
+ return 0;
+}
+
+static int process_commit(unsigned char *sha1)
+{
+ int retval;
+ struct revision *rev = lookup_rev(sha1);
+ if (parse_commit_object(rev))
+ return error("Couldn't parse commit %s\n", sha1_to_hex(sha1));
+
+ retval = fetch(rev->tree);
+ if (retval)
+ return retval;
+ retval = process_tree(rev->tree);
+ return retval;
+}
+
+int main(int argc, char **argv)
+{
+ char *commit_id = argv[1];
+ char *url = argv[2];
+ int retval;
+
+ unsigned char sha1[20];
+
+ get_sha1_hex(commit_id, sha1);
+
+ curl_global_init(CURL_GLOBAL_ALL);
+
+ curl = curl_easy_init();
+
+ base = url;
+
+ retval = fetch(sha1);
+ if (retval)
+ return 1;
+ retval = process_commit(sha1);
+ if (retval)
+ return 1;
+
+ curl_global_cleanup();
+ return 0;
+}
-
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