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git-http-fetch: Remove size limit for objects/info/{packs,alternates} 

git-http-fetch received objects/info/packs into a fixed-size buffer
and started to fail when this file became larger than the buffer.
Change it to grow the buffer dynamically, and do the same thing for
objects/info/alternates.  Also add missing free() calls for these
buffers.

Signed-off-by: Sergey Vlasov <vsu@altlinux.ru>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Sergey Vlasov 2005-10-13 10:49:53 -07:00 committed by Junio C Hamano
parent e70ec8632c
commit bc8f265270
1 changed files with 36 additions and 7 deletions
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43
http-fetch.c
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@ -110,6 +110,22 @@ static size_t fwrite_buffer(void *ptr, size_t eltsize, size_t nmemb,
return size;
}
static size_t fwrite_buffer_dynamic(const void *ptr, size_t eltsize,
size_t nmemb, struct buffer *buffer)
{
size_t size = eltsize * nmemb;
if (size > buffer->size - buffer->posn) {
buffer->size = buffer->size * 3 / 2;
if (buffer->size < buffer->posn + size)
buffer->size = buffer->posn + size;
buffer->buffer = xrealloc(buffer->buffer, buffer->size);
}
memcpy(buffer->buffer + buffer->posn, ptr, size);
buffer->posn += size;
data_received++;
return size;
}
static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb,
void *data)
{
@ -618,11 +634,12 @@ static int fetch_alternates(char *base)
int i = 0;
int http_specific = 1;
struct alt_base *tail = alt;
static const char null_byte = '\0';
struct active_request_slot *slot;
data = xmalloc(4096);
buffer.size = 4095;
buffer.size = 4096;
buffer.posn = 0;
buffer.buffer = data;
@ -634,7 +651,8 @@ static int fetch_alternates(char *base)
slot = get_active_slot();
curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
fwrite_buffer_dynamic);
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
if (start_active_slot(slot)) {
run_active_slot(slot);
@ -646,20 +664,24 @@ static int fetch_alternates(char *base)
slot = get_active_slot();
curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
fwrite_buffer);
fwrite_buffer_dynamic);
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
if (start_active_slot(slot)) {
run_active_slot(slot);
if (slot->curl_result != CURLE_OK) {
free(buffer.buffer);
return 0;
}
}
}
} else {
free(buffer.buffer);
return 0;
}
data[buffer.posn] = '\0';
fwrite_buffer_dynamic(&null_byte, 1, 1, &buffer);
buffer.posn--;
data = buffer.buffer;
while (i < buffer.posn) {
int posn = i;
@ -718,7 +740,8 @@ static int fetch_alternates(char *base)
}
i = posn + 1;
}
free(buffer.buffer);
return ret;
}
@ -748,17 +771,22 @@ static int fetch_indices(struct alt_base *repo)
slot = get_active_slot();
curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
fwrite_buffer_dynamic);
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL);
if (start_active_slot(slot)) {
run_active_slot(slot);
if (slot->curl_result != CURLE_OK)
if (slot->curl_result != CURLE_OK) {
free(buffer.buffer);
return error("%s", curl_errorstr);
}
} else {
free(buffer.buffer);
return error("Unable to start request");
}
data = buffer.buffer;
while (i < buffer.posn) {
switch (data[i]) {
case 'P':
@ -778,6 +806,7 @@ static int fetch_indices(struct alt_base *repo)
i++;
}
free(buffer.buffer);
repo->got_indices = 1;
return 0;
}