Staging
v0.5.1
v0.5.1
Revision 1ed91937e5cd59fdbdfa5f15f6fac132d2b21ce0 authored by Junio C Hamano on 15 December 2005, 01:30:03 UTC, committed by Junio C Hamano on 15 December 2005, 01:30:03 UTC
Oh, I hate to do this but I ended up merging big usage string cleanups from Fredrik, git-am enhancements that made a lot of sense for non mbox users from HPA, and rebase changes (done independently by me and Lukas) among other things, so git is still in perpetual state of 1.0rc. 1.0 will probably be next Wednesday, but who knows. Signed-off-by: Junio C Hamano <junkio@cox.net>
http.c
#include "http.h"
int data_received;
int active_requests = 0;
#ifdef USE_CURL_MULTI
int max_requests = -1;
CURLM *curlm;
#endif
#ifndef NO_CURL_EASY_DUPHANDLE
CURL *curl_default;
#endif
char curl_errorstr[CURL_ERROR_SIZE];
int curl_ssl_verify = -1;
char *ssl_cert = NULL;
#if LIBCURL_VERSION_NUM >= 0x070902
char *ssl_key = NULL;
#endif
#if LIBCURL_VERSION_NUM >= 0x070908
char *ssl_capath = NULL;
#endif
char *ssl_cainfo = NULL;
long curl_low_speed_limit = -1;
long curl_low_speed_time = -1;
struct curl_slist *pragma_header;
struct curl_slist *no_range_header;
struct active_request_slot *active_queue_head = NULL;
size_t fread_buffer(void *ptr, size_t eltsize, size_t nmemb,
struct buffer *buffer)
{
size_t size = eltsize * nmemb;
if (size > buffer->size - buffer->posn)
size = buffer->size - buffer->posn;
memcpy(ptr, buffer->buffer + buffer->posn, size);
buffer->posn += size;
return size;
}
size_t fwrite_buffer(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;
}
size_t fwrite_null(const void *ptr, size_t eltsize,
size_t nmemb, struct buffer *buffer)
{
data_received++;
return eltsize * nmemb;
}
static void finish_active_slot(struct active_request_slot *slot);
#ifdef USE_CURL_MULTI
static void process_curl_messages(void)
{
int num_messages;
struct active_request_slot *slot;
CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages);
while (curl_message != NULL) {
if (curl_message->msg == CURLMSG_DONE) {
int curl_result = curl_message->data.result;
slot = active_queue_head;
while (slot != NULL &&
slot->curl != curl_message->easy_handle)
slot = slot->next;
if (slot != NULL) {
curl_multi_remove_handle(curlm, slot->curl);
slot->curl_result = curl_result;
finish_active_slot(slot);
} else {
fprintf(stderr, "Received DONE message for unknown request!\n");
}
} else {
fprintf(stderr, "Unknown CURL message received: %d\n",
(int)curl_message->msg);
}
curl_message = curl_multi_info_read(curlm, &num_messages);
}
}
#endif
static int http_options(const char *var, const char *value)
{
if (!strcmp("http.sslverify", var)) {
if (curl_ssl_verify == -1) {
curl_ssl_verify = git_config_bool(var, value);
}
return 0;
}
if (!strcmp("http.sslcert", var)) {
if (ssl_cert == NULL) {
ssl_cert = xmalloc(strlen(value)+1);
strcpy(ssl_cert, value);
}
return 0;
}
#if LIBCURL_VERSION_NUM >= 0x070902
if (!strcmp("http.sslkey", var)) {
if (ssl_key == NULL) {
ssl_key = xmalloc(strlen(value)+1);
strcpy(ssl_key, value);
}
return 0;
}
#endif
#if LIBCURL_VERSION_NUM >= 0x070908
if (!strcmp("http.sslcapath", var)) {
if (ssl_capath == NULL) {
ssl_capath = xmalloc(strlen(value)+1);
strcpy(ssl_capath, value);
}
return 0;
}
#endif
if (!strcmp("http.sslcainfo", var)) {
if (ssl_cainfo == NULL) {
ssl_cainfo = xmalloc(strlen(value)+1);
strcpy(ssl_cainfo, value);
}
return 0;
}
#ifdef USE_CURL_MULTI
if (!strcmp("http.maxrequests", var)) {
if (max_requests == -1)
max_requests = git_config_int(var, value);
return 0;
}
#endif
if (!strcmp("http.lowspeedlimit", var)) {
if (curl_low_speed_limit == -1)
curl_low_speed_limit = (long)git_config_int(var, value);
return 0;
}
if (!strcmp("http.lowspeedtime", var)) {
if (curl_low_speed_time == -1)
curl_low_speed_time = (long)git_config_int(var, value);
return 0;
}
/* Fall back on the default ones */
return git_default_config(var, value);
}
static CURL* get_curl_handle(void)
{
CURL* result = curl_easy_init();
curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, curl_ssl_verify);
#if LIBCURL_VERSION_NUM >= 0x070907
curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
#endif
if (ssl_cert != NULL)
curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert);
#if LIBCURL_VERSION_NUM >= 0x070902
if (ssl_key != NULL)
curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key);
#endif
#if LIBCURL_VERSION_NUM >= 0x070908
if (ssl_capath != NULL)
curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath);
#endif
if (ssl_cainfo != NULL)
curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo);
curl_easy_setopt(result, CURLOPT_FAILONERROR, 1);
if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) {
curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT,
curl_low_speed_limit);
curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME,
curl_low_speed_time);
}
curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1);
return result;
}
void http_init(void)
{
char *low_speed_limit;
char *low_speed_time;
curl_global_init(CURL_GLOBAL_ALL);
pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache");
no_range_header = curl_slist_append(no_range_header, "Range:");
#ifdef USE_CURL_MULTI
{
char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS");
if (http_max_requests != NULL)
max_requests = atoi(http_max_requests);
}
curlm = curl_multi_init();
if (curlm == NULL) {
fprintf(stderr, "Error creating curl multi handle.\n");
exit(1);
}
#endif
if (getenv("GIT_SSL_NO_VERIFY"))
curl_ssl_verify = 0;
ssl_cert = getenv("GIT_SSL_CERT");
#if LIBCURL_VERSION_NUM >= 0x070902
ssl_key = getenv("GIT_SSL_KEY");
#endif
#if LIBCURL_VERSION_NUM >= 0x070908
ssl_capath = getenv("GIT_SSL_CAPATH");
#endif
ssl_cainfo = getenv("GIT_SSL_CAINFO");
low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT");
if (low_speed_limit != NULL)
curl_low_speed_limit = strtol(low_speed_limit, NULL, 10);
low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME");
if (low_speed_time != NULL)
curl_low_speed_time = strtol(low_speed_time, NULL, 10);
git_config(http_options);
if (curl_ssl_verify == -1)
curl_ssl_verify = 1;
#ifdef USE_CURL_MULTI
if (max_requests < 1)
max_requests = DEFAULT_MAX_REQUESTS;
#endif
#ifndef NO_CURL_EASY_DUPHANDLE
curl_default = get_curl_handle();
#endif
}
void http_cleanup(void)
{
struct active_request_slot *slot = active_queue_head;
#ifdef USE_CURL_MULTI
char *wait_url;
#endif
while (slot != NULL) {
#ifdef USE_CURL_MULTI
if (slot->in_use) {
curl_easy_getinfo(slot->curl,
CURLINFO_EFFECTIVE_URL,
&wait_url);
fprintf(stderr, "Waiting for %s\n", wait_url);
run_active_slot(slot);
}
#endif
if (slot->curl != NULL)
curl_easy_cleanup(slot->curl);
slot = slot->next;
}
#ifndef NO_CURL_EASY_DUPHANDLE
curl_easy_cleanup(curl_default);
#endif
#ifdef USE_CURL_MULTI
curl_multi_cleanup(curlm);
#endif
curl_global_cleanup();
}
struct active_request_slot *get_active_slot(void)
{
struct active_request_slot *slot = active_queue_head;
struct active_request_slot *newslot;
#ifdef USE_CURL_MULTI
int num_transfers;
/* Wait for a slot to open up if the queue is full */
while (active_requests >= max_requests) {
curl_multi_perform(curlm, &num_transfers);
if (num_transfers < active_requests) {
process_curl_messages();
}
}
#endif
while (slot != NULL && slot->in_use) {
slot = slot->next;
}
if (slot == NULL) {
newslot = xmalloc(sizeof(*newslot));
newslot->curl = NULL;
newslot->in_use = 0;
newslot->next = NULL;
slot = active_queue_head;
if (slot == NULL) {
active_queue_head = newslot;
} else {
while (slot->next != NULL) {
slot = slot->next;
}
slot->next = newslot;
}
slot = newslot;
}
if (slot->curl == NULL) {
#ifdef NO_CURL_EASY_DUPHANDLE
slot->curl = get_curl_handle();
#else
slot->curl = curl_easy_duphandle(curl_default);
#endif
}
active_requests++;
slot->in_use = 1;
slot->local = NULL;
slot->callback_data = NULL;
slot->callback_func = NULL;
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_range_header);
curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr);
return slot;
}
int start_active_slot(struct active_request_slot *slot)
{
#ifdef USE_CURL_MULTI
CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl);
if (curlm_result != CURLM_OK &&
curlm_result != CURLM_CALL_MULTI_PERFORM) {
active_requests--;
slot->in_use = 0;
return 0;
}
#endif
return 1;
}
#ifdef USE_CURL_MULTI
void step_active_slots(void)
{
int num_transfers;
CURLMcode curlm_result;
do {
curlm_result = curl_multi_perform(curlm, &num_transfers);
} while (curlm_result == CURLM_CALL_MULTI_PERFORM);
if (num_transfers < active_requests) {
process_curl_messages();
fill_active_slots();
}
}
#endif
void run_active_slot(struct active_request_slot *slot)
{
#ifdef USE_CURL_MULTI
long last_pos = 0;
long current_pos;
fd_set readfds;
fd_set writefds;
fd_set excfds;
int max_fd;
struct timeval select_timeout;
while (slot->in_use) {
data_received = 0;
step_active_slots();
if (!data_received && slot->local != NULL) {
current_pos = ftell(slot->local);
if (current_pos > last_pos)
data_received++;
last_pos = current_pos;
}
if (slot->in_use && !data_received) {
max_fd = 0;
FD_ZERO(&readfds);
FD_ZERO(&writefds);
FD_ZERO(&excfds);
select_timeout.tv_sec = 0;
select_timeout.tv_usec = 50000;
select(max_fd, &readfds, &writefds,
&excfds, &select_timeout);
}
}
#else
while (slot->in_use) {
slot->curl_result = curl_easy_perform(slot->curl);
finish_active_slot(slot);
}
#endif
}
static void finish_active_slot(struct active_request_slot *slot)
{
active_requests--;
slot->in_use = 0;
curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code);
/* Run callback if appropriate */
if (slot->callback_func != NULL) {
slot->callback_func(slot->callback_data);
}
}
void finish_all_active_slots(void)
{
struct active_request_slot *slot = active_queue_head;
while (slot != NULL)
if (slot->in_use) {
run_active_slot(slot);
slot = active_queue_head;
} else {
slot = slot->next;
}
}
Computing file changes ...