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http: parse the response from the server

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Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>
This commit is contained in:
Carlos Martín Nieto 2011-10-05 00:42:27 +02:00 committed by Vicent Marti
parent cbb2feded6
commit f9613325f1
2 changed files with 109 additions and 11 deletions
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4
src/netops.c
View File

@ -157,9 +157,9 @@ int gitno_send_chunk_size(int s, size_t len)
char str[8] = {0};
int ret;
ret = p_snprintf(str, sizeof(str), "%zx", len);
ret = p_snprintf(str, sizeof(str), "%zx\r\n", len);
if (ret >= (int) sizeof(str)) {
return git__throw(GIT_ESHORTBUFFER, "Your number is too fucking big");
return git__throw(GIT_ESHORTBUFFER, "Your number is too big");
}
return gitno_send(s, str, ret, 0 /* TODO: MSG_MORE */);

116
src/transport-http.c
View File

@ -25,6 +25,7 @@ enum last_cb {
typedef struct {
git_transport parent;
git_vector refs;
git_vector common;
int socket;
git_buf buf;
git_remote_head **heads;
@ -55,9 +56,10 @@ static int gen_request(git_buf *buf, const char *url, const char *host, const ch
git_buf_printf(buf, "%s %s/info/refs?service=git-%s HTTP/1.1\r\n", op, path, service);
git_buf_puts(buf, "User-Agent: git/1.0 (libgit2 " LIBGIT2_VERSION ")\r\n");
git_buf_printf(buf, "Host: %s\r\n", host);
git_buf_puts(buf, "Accept: */*\r\n" "Pragma: no-cache\r\n\r\n");
if (strncmp(service, "POST", strlen("POST")))
git_buf_puts(buf, "Content-Encoding: chunked");
git_buf_puts(buf, "Accept: */*\r\n" "Pragma: no-cache\r\n");
if (!strncmp(op, "POST", strlen("POST")))
git_buf_puts(buf, "Transfer-Encoding: chunked\r\n");
git_buf_puts(buf, "\r\n");
if (git_buf_oom(buf))
return GIT_ENOMEM;
@ -341,6 +343,98 @@ static int http_ls(git_transport *transport, git_headarray *array)
return GIT_SUCCESS;
}
static int on_body_parse_response(http_parser *parser, const char *str, size_t len)
{
transport_http *t = (transport_http *) parser->data;
git_buf *buf = &t->buf;
git_vector *common = &t->common;
int error;
const char *line_end, *ptr;
static int first_pkt = 1;
if (len == 0) { /* EOF */
if (buf->size != 0)
return t->error = git__throw(GIT_ERROR, "EOF and unprocessed data");
else
return 0;
}
git_buf_put(buf, str, len);
ptr = buf->ptr;
while (1) {
git_pkt *pkt;
if (buf->size == 0)
return 0;
error = git_pkt_parse_line(&pkt, ptr, &line_end, buf->size);
if (error == GIT_ESHORTBUFFER)
return 0; /* Ask for more */
if (error < GIT_SUCCESS)
return t->error = git__rethrow(error, "Failed to parse pkt-line");
git_buf_consume(buf, line_end);
if (first_pkt) {
first_pkt = 0;
if (pkt->type != GIT_PKT_COMMENT)
return t->error = git__throw(GIT_EOBJCORRUPTED, "Not a valid smart HTTP response");
}
if (pkt->type == GIT_PKT_NAK)
return 0;
if (pkt->type != GIT_PKT_ACK)
continue;
error = git_vector_insert(common, pkt);
if (error < GIT_SUCCESS)
return t->error = git__rethrow(error, "Failed to add pkt to list");
}
return error;
}
static int parse_response(transport_http *t)
{
int error = GIT_SUCCESS;
http_parser_settings settings;
char buffer[1024];
gitno_buffer buf;
http_parser_init(&t->parser, HTTP_RESPONSE);
t->parser.data = t;
memset(&settings, 0x0, sizeof(http_parser_settings));
settings.on_header_field = on_header_field;
settings.on_header_value = on_header_value;
settings.on_headers_complete = on_headers_complete;
settings.on_body = on_body_parse_response;
settings.on_message_complete = on_message_complete;
gitno_buffer_setup(&buf, buffer, sizeof(buffer), t->socket);
while(1) {
size_t parsed;
error = gitno_recv(&buf);
if (error < GIT_SUCCESS)
return git__rethrow(error, "Error receiving data from network");
parsed = http_parser_execute(&t->parser, &settings, buf.data, buf.offset);
/* Both should happen at the same time */
if (parsed != buf.offset || t->error < GIT_SUCCESS)
return git__rethrow(t->error, "Error parsing HTTP data");
gitno_consume_n(&buf, parsed);
if (error == 0 || t->transfer_finished)
return GIT_SUCCESS;
}
return error;
}
static int setup_walk(git_revwalk **out, git_repository *repo)
{
git_revwalk *walk;
@ -395,8 +489,9 @@ static int http_negotiate_fetch(git_transport *transport, git_repository *repo,
char buff[128];
gitno_buffer buf;
git_revwalk *walk = NULL;
git_oid oid, *poid;
git_vector common;
git_oid oid;
git_pkt_ack *pkt;
git_vector *common = &t->common;
const char *prefix = "http://", *url = t->parent.url;
git_buf request = GIT_BUF_INIT;
gitno_buffer_setup(&buf, buff, sizeof(buff), t->socket);
@ -405,7 +500,7 @@ static int http_negotiate_fetch(git_transport *transport, git_repository *repo,
if (!git__prefixcmp(url, prefix))
url += strlen(prefix);
error = git_vector_init(&common, 16, NULL);
error = git_vector_init(common, 16, NULL);
if (error < GIT_SUCCESS)
return git__rethrow(error, "Failed to init common vector");
@ -441,8 +536,8 @@ static int http_negotiate_fetch(git_transport *transport, git_repository *repo,
}
/* We need to send these on each connection */
git_vector_foreach (&common, i, poid) {
error = git_pkt_send_have(poid, t->socket, 1);
git_vector_foreach (common, i, pkt) {
error = git_pkt_send_have(&pkt->oid, t->socket, 1);
if (error < GIT_SUCCESS) {
error = git__rethrow(error, "Failed to send common have");
goto cleanup;
@ -450,7 +545,7 @@ static int http_negotiate_fetch(git_transport *transport, git_repository *repo,
}
i = 0;
while ((error = git_revwalk_next(&oid, walk)) == GIT_SUCCESS) {
while ((i < 256) && ((error = git_revwalk_next(&oid, walk)) == GIT_SUCCESS)) {
error = git_pkt_send_have(&oid, t->socket, 1);
if (error < GIT_SUCCESS) {
error = git__rethrow(error, "Failed to send have");
@ -460,6 +555,9 @@ static int http_negotiate_fetch(git_transport *transport, git_repository *repo,
}
if (error < GIT_SUCCESS || i >= 256)
break;
error = parse_response(t);
} while(1);
cleanup: