* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
#include <sys/param.h>
#endif
-#if defined(HAVE_SIGNAL_H) && defined(HAVE_SIGACTION) && defined(USE_OPENSSL)
-#define SIGPIPE_IGNORE 1
-#include <signal.h>
-#endif
-
#include "strequal.h"
#include "urldata.h"
#include <curl/curl.h>
#include "transfer.h"
-#include "sslgen.h"
+#include "vtls/vtls.h"
#include "url.h"
#include "getinfo.h"
#include "hostip.h"
#include "warnless.h"
#include "conncache.h"
#include "multiif.h"
+#include "sigpipe.h"
+#include "ssh.h"
#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>
/* The last #include file should be: */
#include "memdebug.h"
-#ifdef SIGPIPE_IGNORE
-struct sigpipe_ignore {
- struct sigaction old_pipe_act;
- bool no_signal;
-};
-
-#define SIGPIPE_VARIABLE(x) struct sigpipe_ignore x
-
-/*
- * sigpipe_ignore() makes sure we ignore SIGPIPE while running libcurl
- * internals, and then sigpipe_restore() will restore the situation when we
- * return from libcurl again.
- */
-static void sigpipe_ignore(struct SessionHandle *data,
- struct sigpipe_ignore *ig)
-{
- /* get a local copy of no_signal because the SessionHandle might not be
- around when we restore */
- ig->no_signal = data->set.no_signal;
- if(!data->set.no_signal) {
- struct sigaction action;
- /* first, extract the existing situation */
- memset(&ig->old_pipe_act, 0, sizeof(struct sigaction));
- sigaction(SIGPIPE, NULL, &ig->old_pipe_act);
- action = ig->old_pipe_act;
- /* ignore this signal */
- action.sa_handler = SIG_IGN;
- sigaction(SIGPIPE, &action, NULL);
- }
-}
-
-/*
- * sigpipe_restore() puts back the outside world's opinion of signal handler
- * and SIGPIPE handling. It MUST only be called after a corresponding
- * sigpipe_ignore() was used.
- */
-static void sigpipe_restore(struct sigpipe_ignore *ig)
-{
- if(!ig->no_signal)
- /* restore the outside state */
- sigaction(SIGPIPE, &ig->old_pipe_act, NULL);
-}
-
-#else
-/* for systems without sigaction */
-#define sigpipe_ignore(x,y) Curl_nop_stmt
-#define sigpipe_restore(x) Curl_nop_stmt
-#define SIGPIPE_VARIABLE(x)
-#endif
-
/* win32_cleanup() is for win32 socket cleanup functionality, the opposite
of win32_init() */
static void win32_cleanup(void)
#ifdef USE_WINDOWS_SSPI
{
- CURLcode err = Curl_sspi_global_init();
- if(err != CURLE_OK)
- return err;
+ CURLcode result = Curl_sspi_global_init();
+ if(result)
+ return result;
}
#endif
}
if(flags & CURL_GLOBAL_WIN32)
- if(win32_init() != CURLE_OK) {
+ if(win32_init()) {
DEBUGF(fprintf(stderr, "Error: win32_init failed\n"));
return CURLE_FAILED_INIT;
}
idna_init();
#endif
- if(Curl_resolver_global_init() != CURLE_OK) {
+ if(Curl_resolver_global_init()) {
DEBUGF(fprintf(stderr, "Error: resolver_global_init failed\n"));
return CURLE_FAILED_INIT;
}
curl_free_callback f, curl_realloc_callback r,
curl_strdup_callback s, curl_calloc_callback c)
{
- CURLcode code = CURLE_OK;
+ CURLcode result = CURLE_OK;
/* Invalid input, return immediately */
if(!m || !f || !r || !s || !c)
return CURLE_FAILED_INIT;
- /* Already initialized, don't do it again */
- if(initialized)
+ if(initialized) {
+ /* Already initialized, don't do it again, but bump the variable anyway to
+ work like curl_global_init() and require the same amount of cleanup
+ calls. */
+ initialized++;
return CURLE_OK;
+ }
/* Call the actual init function first */
- code = curl_global_init(flags);
- if(code == CURLE_OK) {
+ result = curl_global_init(flags);
+ if(!result) {
Curl_cmalloc = m;
Curl_cfree = f;
Curl_cstrdup = s;
Curl_ccalloc = c;
}
- return code;
+ return result;
}
/**
*/
CURL *curl_easy_init(void)
{
- CURLcode res;
+ CURLcode result;
struct SessionHandle *data;
/* Make sure we inited the global SSL stuff */
if(!initialized) {
- res = curl_global_init(CURL_GLOBAL_DEFAULT);
- if(res) {
+ result = curl_global_init(CURL_GLOBAL_DEFAULT);
+ if(result) {
/* something in the global init failed, return nothing */
DEBUGF(fprintf(stderr, "Error: curl_global_init failed\n"));
return NULL;
}
/* We use curl_open() with undefined URL so far */
- res = Curl_open(&data);
- if(res != CURLE_OK) {
+ result = Curl_open(&data);
+ if(result) {
DEBUGF(fprintf(stderr, "Error: Curl_open failed\n"));
return NULL;
}
{
va_list arg;
struct SessionHandle *data = curl;
- CURLcode ret;
+ CURLcode result;
if(!curl)
return CURLE_BAD_FUNCTION_ARGUMENT;
va_start(arg, tag);
- ret = Curl_setopt(data, tag, arg);
+ result = Curl_setopt(data, tag, arg);
va_end(arg);
- return ret;
+ return result;
}
#ifdef CURLDEBUG
-struct monitor {
- struct monitor *next; /* the next node in the list or NULL */
+struct socketmonitor {
+ struct socketmonitor *next; /* the next node in the list or NULL */
struct pollfd socket; /* socket info of what to monitor */
};
long ms; /* timeout, run the timeout function when reached */
bool msbump; /* set TRUE when timeout is set by callback */
int num_sockets; /* number of nodes in the monitor list */
- struct monitor *list; /* list of sockets to monitor */
+ struct socketmonitor *list; /* list of sockets to monitor */
int running_handles; /* store the returned number */
};
ev->ms = timeout_ms;
ev->msbump = TRUE;
- /* fprintf(stderr, "%s: timeout %ld\n", __func__, timeout_ms); */
return 0;
}
pointer */
{
struct events *ev = userp;
- struct monitor *m;
- struct monitor *prev=NULL;
+ struct socketmonitor *m;
+ struct socketmonitor *prev=NULL;
+
+#if defined(CURL_DISABLE_VERBOSE_STRINGS)
+ (void) easy;
+#endif
(void)socketp;
m = ev->list;
if(m->socket.fd == s) {
if(what == CURL_POLL_REMOVE) {
- struct monitor *nxt = m->next;
+ struct socketmonitor *nxt = m->next;
/* remove this node from the list of monitored sockets */
if(prev)
prev->next = nxt;
__func__, s); */
}
else {
- m = malloc(sizeof(struct monitor));
+ m = malloc(sizeof(struct socketmonitor));
m->next = ev->list;
m->socket.fd = s;
m->socket.events = socketcb2poll(what);
{
bool done = FALSE;
CURLMcode mcode;
- CURLcode rc = CURLE_OK;
+ CURLcode result = CURLE_OK;
while(!done) {
CURLMsg *msg;
- struct monitor *m;
+ struct socketmonitor *m;
struct pollfd *f;
struct pollfd fds[4];
int numfds=0;
/* get the time stamp to use to figure out how long poll takes */
before = curlx_tvnow();
- /* fprintf(stderr, "poll(), %d numfds\n", numfds); */
-
/* wait for activity or timeout */
pollrc = Curl_poll(fds, numfds, (int)ev->ms);
ev->ms += curlx_tvdiff(after, before);
}
+ else
+ return CURLE_RECV_ERROR;
+
if(mcode)
return CURLE_URL_MALFORMAT; /* TODO: return a proper error! */
second argument */
msg = curl_multi_info_read(multi, &pollrc);
if(msg) {
- rc = msg->data.result;
+ result = msg->data.result;
done = TRUE;
}
}
- return rc;
+ return result;
}
return wait_or_timeout(multi, &evs);
}
+#else /* CURLDEBUG */
+/* when not built with debug, this function doesn't exist */
+#define easy_events(x) CURLE_NOT_BUILT_IN
#endif
static CURLcode easy_transfer(CURLM *multi)
{
bool done = FALSE;
CURLMcode mcode = CURLM_OK;
- CURLcode code;
+ CURLcode result = CURLE_OK;
struct timeval before;
int without_fds = 0; /* count number of consecutive returns from
curl_multi_wait() without any filedescriptors */
while(!done && !mcode) {
- int still_running;
+ int still_running = 0;
int ret;
before = curlx_tvnow();
if(mcode == CURLM_OK) {
if(ret == -1) {
/* poll() failed not on EINTR, indicate a network problem */
- code = CURLE_RECV_ERROR;
+ result = CURLE_RECV_ERROR;
break;
}
else if(ret == 0) {
int rc;
CURLMsg *msg = curl_multi_info_read(multi, &rc);
if(msg) {
- code = msg->data.result;
+ result = msg->data.result;
done = TRUE;
}
}
}
- return code;
+
+ /* Make sure to return some kind of error if there was a multi problem */
+ if(mcode) {
+ return (mcode == CURLM_OUT_OF_MEMORY) ? CURLE_OUT_OF_MEMORY :
+ /* The other multi errors should never happen, so return
+ something suitably generic */
+ CURLE_BAD_FUNCTION_ARGUMENT;
+ }
+
+ return result;
}
* DEBUG: if 'events' is set TRUE, this function will use a replacement engine
* instead of curl_multi_perform() and use curl_multi_socket_action().
*/
-static CURLcode easy_perform(CURL *easy, bool events)
+static CURLcode easy_perform(struct SessionHandle *data, bool events)
{
CURLM *multi;
CURLMcode mcode;
- CURLcode code = CURLE_OK;
- struct SessionHandle *data = easy;
+ CURLcode result = CURLE_OK;
SIGPIPE_VARIABLE(pipe_st);
- if(!easy)
+ if(!data)
return CURLE_BAD_FUNCTION_ARGUMENT;
if(data->multi) {
- failf(data, "easy handled already used in multi handle");
+ failf(data, "easy handle already used in multi handle");
return CURLE_FAILED_INIT;
}
/* Copy the MAXCONNECTS option to the multi handle */
curl_multi_setopt(multi, CURLMOPT_MAXCONNECTS, data->set.maxconnects);
- mcode = curl_multi_add_handle(multi, easy);
+ mcode = curl_multi_add_handle(multi, data);
if(mcode) {
curl_multi_cleanup(multi);
if(mcode == CURLM_OUT_OF_MEMORY)
data->multi = multi;
/* run the transfer */
- code = events ? easy_events(multi) : easy_transfer(multi);
+ result = events ? easy_events(multi) : easy_transfer(multi);
/* ignoring the return code isn't nice, but atm we can't really handle
a failure here, room for future improvement! */
- (void)curl_multi_remove_handle(multi, easy);
+ (void)curl_multi_remove_handle(multi, data);
sigpipe_restore(&pipe_st);
/* The multi handle is kept alive, owned by the easy handle */
- return code;
+ return result;
}
{
va_list arg;
void *paramp;
- CURLcode ret;
+ CURLcode result;
struct SessionHandle *data = (struct SessionHandle *)curl;
va_start(arg, info);
paramp = va_arg(arg, void *);
- ret = Curl_getinfo(data, info, paramp);
+ result = Curl_getinfo(data, info, paramp);
va_end(arg);
- return ret;
+ return result;
}
/*
outcurl->state.headersize = HEADERSIZE;
/* copy all userdefined values */
- if(Curl_dupset(outcurl, data) != CURLE_OK)
+ if(Curl_dupset(outcurl, data))
goto fail;
/* the connection cache is setup on demand */
/* Clone the resolver handle, if present, for the new handle */
if(Curl_resolver_duphandle(&outcurl->state.resolver,
- data->state.resolver) != CURLE_OK)
+ data->state.resolver))
goto fail;
Curl_convert_setup(outcurl);
/* we have a buffer for sending that we now seem to be able to deliver
since the receive pausing is lifted! */
- /* get the pointer, type and length in local copies since the function may
- return PAUSE again and then we'll get a new copy allocted and stored in
+ /* get the pointer in local copy since the function may return PAUSE
+ again and then we'll get a new copy allocted and stored in
the tempwrite variables */
char *tempwrite = data->state.tempwrite;
- char *freewrite = tempwrite; /* store this pointer to free it later */
- size_t tempsize = data->state.tempwritesize;
- int temptype = data->state.tempwritetype;
- size_t chunklen;
-
- /* clear tempwrite here just to make sure it gets cleared if there's no
- further use of it, and make sure we don't clear it after the function
- invoke as it may have been set to a new value by then */
- data->state.tempwrite = NULL;
-
- /* since the write callback API is define to never exceed
- CURL_MAX_WRITE_SIZE bytes in a single call, and since we may in fact
- have more data than that in our buffer here, we must loop sending the
- data in multiple calls until there's no data left or we get another
- pause returned.
-
- A tricky part is that the function we call will "buffer" the data
- itself when it pauses on a particular buffer, so we may need to do some
- extra trickery if we get a pause return here.
- */
- do {
- chunklen = (tempsize > CURL_MAX_WRITE_SIZE)?CURL_MAX_WRITE_SIZE:tempsize;
-
- result = Curl_client_write(data->easy_conn,
- temptype, tempwrite, chunklen);
- if(result)
- /* failures abort the loop at once */
- break;
-
- if(data->state.tempwrite && (tempsize - chunklen)) {
- /* Ouch, the reading is again paused and the block we send is now
- "cached". If this is the final chunk we can leave it like this, but
- if we have more chunks that are cached after this, we need to free
- the newly cached one and put back a version that is truly the entire
- contents that is saved for later
- */
- char *newptr;
-
- /* note that tempsize is still the size as before the callback was
- used, and thus the whole piece of data to keep */
- newptr = realloc(data->state.tempwrite, tempsize);
-
- if(!newptr) {
- free(data->state.tempwrite); /* free old area */
- data->state.tempwrite = NULL;
- result = CURLE_OUT_OF_MEMORY;
- /* tempwrite will be freed further down */
- break;
- }
- data->state.tempwrite = newptr; /* store new pointer */
- memcpy(newptr, tempwrite, tempsize);
- data->state.tempwritesize = tempsize; /* store new size */
- /* tempwrite will be freed further down */
- break; /* go back to pausing until further notice */
- }
- else {
- tempsize -= chunklen; /* left after the call above */
- tempwrite += chunklen; /* advance the pointer */
- }
- } while((result == CURLE_OK) && tempsize);
-
- free(freewrite); /* this is unconditionally no longer used */
+ data->state.tempwrite = NULL;
+ result = Curl_client_chop_write(data->easy_conn, data->state.tempwritetype,
+ tempwrite, data->state.tempwritesize);
+ free(tempwrite);
}
/* if there's no error and we're not pausing both directions, we want
CURLcode curl_easy_recv(CURL *curl, void *buffer, size_t buflen, size_t *n)
{
curl_socket_t sfd;
- CURLcode ret;
+ CURLcode result;
ssize_t n1;
struct connectdata *c;
struct SessionHandle *data = (struct SessionHandle *)curl;
- ret = easy_connection(data, &sfd, &c);
- if(ret)
- return ret;
+ result = easy_connection(data, &sfd, &c);
+ if(result)
+ return result;
*n = 0;
- ret = Curl_read(c, sfd, buffer, buflen, &n1);
+ result = Curl_read(c, sfd, buffer, buflen, &n1);
- if(ret != CURLE_OK)
- return ret;
+ if(result)
+ return result;
*n = (size_t)n1;
size_t *n)
{
curl_socket_t sfd;
- CURLcode ret;
+ CURLcode result;
ssize_t n1;
struct connectdata *c = NULL;
struct SessionHandle *data = (struct SessionHandle *)curl;
- ret = easy_connection(data, &sfd, &c);
- if(ret)
- return ret;
+ result = easy_connection(data, &sfd, &c);
+ if(result)
+ return result;
*n = 0;
- ret = Curl_write(c, sfd, buffer, buflen, &n1);
+ result = Curl_write(c, sfd, buffer, buflen, &n1);
if(n1 == -1)
return CURLE_SEND_ERROR;
/* detect EAGAIN */
- if((CURLE_OK == ret) && (0 == n1))
+ if(!result && !n1)
return CURLE_AGAIN;
*n = (size_t)n1;
- return ret;
+ return result;
}
projects / platform / upstream / curl.git / blobdiff