[Asterisk-code-review] cleanup: Fix fread() and fwrite() error handling (asterisk[14])
Joshua Colp
asteriskteam at digium.com
Thu Apr 27 13:59:11 CDT 2017
Joshua Colp has submitted this change and it was merged. ( https://gerrit.asterisk.org/5511 )
Change subject: cleanup: Fix fread() and fwrite() error handling
......................................................................
cleanup: Fix fread() and fwrite() error handling
Cleaned up some of the incorrect uses of fread() and fwrite(), mostly in
the format modules. Neither of these functions will ever return a value
less than 0, which we were checking for in some cases.
I've introduced a fair amount of duplication in the format modules, but
I plan to change how format modules work internally in a subsequent
patch set, so this is simply a stop-gap.
Change-Id: I8ca1cd47c20b2c0b72088bd13b9046f6977aa872
---
M addons/format_mp3.c
M apps/app_minivm.c
M apps/app_voicemail.c
M formats/format_g719.c
M formats/format_g723.c
M formats/format_g726.c
M formats/format_g729.c
M formats/format_gsm.c
M formats/format_h263.c
M formats/format_h264.c
M formats/format_ilbc.c
M formats/format_ogg_vorbis.c
M formats/format_pcm.c
M formats/format_siren14.c
M formats/format_siren7.c
M formats/format_sln.c
M formats/format_vox.c
M formats/format_wav.c
M formats/format_wav_gsm.c
M main/http.c
M main/manager.c
21 files changed, 227 insertions(+), 70 deletions(-)
Approvals:
Kevin Harwell: Looks good to me, approved
Richard Mudgett: Looks good to me, but someone else must approve
Joshua Colp: Looks good to me, but someone else must approve; Approved for Submit
diff --git a/addons/format_mp3.c b/addons/format_mp3.c
index 07715b5..86eb58d 100644
--- a/addons/format_mp3.c
+++ b/addons/format_mp3.c
@@ -120,9 +120,11 @@
res = ftell(s->f);
p->sbuflen = fread(p->sbuf, 1, MP3_SCACHE, s->f);
- if(p->sbuflen < 0) {
- ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", p->sbuflen, strerror(errno));
- return -1;
+ if (p->sbuflen < MP3_SCACHE) {
+ if (ferror(s->f)) {
+ ast_log(LOG_WARNING, "Error while reading MP3 file: %s\n", strerror(errno));
+ return -1;
+ }
}
res = decodeMP3(&p->mp,p->sbuf,p->sbuflen,p->dbuf,MP3_DCACHE,&p->dbuflen);
if(res != MP3_OK)
diff --git a/apps/app_minivm.c b/apps/app_minivm.c
index 5a017d6..64bee57 100644
--- a/apps/app_minivm.c
+++ b/apps/app_minivm.c
@@ -856,16 +856,16 @@
if (bio->ateof)
return 0;
- if ((l = fread(bio->iobuf, 1, B64_BASEMAXINLINE,fi)) <= 0) {
- if (ferror(fi))
- return -1;
-
+ if ((l = fread(bio->iobuf, 1, B64_BASEMAXINLINE, fi)) != B64_BASEMAXINLINE) {
bio->ateof = 1;
- return 0;
+ if (l == 0) {
+ /* Assume EOF */
+ return 0;
+ }
}
- bio->iolen= l;
- bio->iocp= 0;
+ bio->iolen = l;
+ bio->iocp = 0;
return 1;
}
diff --git a/apps/app_voicemail.c b/apps/app_voicemail.c
index b0185c1..5450ffc 100644
--- a/apps/app_voicemail.c
+++ b/apps/app_voicemail.c
@@ -2730,9 +2730,9 @@
*(vmu->email) = '\0';
return -1;
}
- if (fread(buf, len, 1, p) < len) {
+ if (fread(buf, 1, len, p) != len) {
if (ferror(p)) {
- ast_log(LOG_ERROR, "Short read while reading in mail file.\n");
+ ast_log(LOG_ERROR, "Error while reading mail file: %s\n");
return -1;
}
}
@@ -4745,12 +4745,12 @@
if (bio->ateof)
return 0;
- if ((l = fread(bio->iobuf, 1, BASEMAXINLINE, fi)) <= 0) {
- if (ferror(fi))
- return -1;
-
+ if ((l = fread(bio->iobuf, 1, BASEMAXINLINE, fi)) != BASEMAXINLINE) {
bio->ateof = 1;
- return 0;
+ if (l == 0) {
+ /* Assume EOF */
+ return 0;
+ }
}
bio->iolen = l;
diff --git a/formats/format_g719.c b/formats/format_g719.c
index f6807b9..62e8c40 100644
--- a/formats/format_g719.c
+++ b/formats/format_g719.c
@@ -47,8 +47,16 @@
AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE);
if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
- if (res)
- ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
+ if (feof(s->f)) {
+ if (res) {
+ ast_log(LOG_WARNING, "Incomplete frame data at end of %s file "
+ "(expected %d bytes, read %d)\n",
+ ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res);
+ }
+ } else {
+ ast_log(LOG_ERROR, "Error while reading %s file: %s\n",
+ ast_format_get_name(s->fr.subclass.format), strerror(errno));
+ }
return NULL;
}
*whennext = s->fr.samples = BYTES_TO_SAMPLES(res);
diff --git a/formats/format_g723.c b/formats/format_g723.c
index 9a40081..79d241b 100644
--- a/formats/format_g723.c
+++ b/formats/format_g723.c
@@ -66,8 +66,17 @@
}
/* Read the data into the buffer */
AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, size);
- if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != size) {
- ast_log(LOG_WARNING, "Short read (%d of %d bytes) (%s)!\n", res, size, strerror(errno));
+ if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
+ if (feof(s->f)) {
+ if (res) {
+ ast_log(LOG_WARNING, "Incomplete frame data at end of %s file "
+ "(expected %d bytes, read %d)\n",
+ ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res);
+ }
+ } else {
+ ast_log(LOG_ERROR, "Error while reading %s file: %s\n",
+ ast_format_get_name(s->fr.subclass.format), strerror(errno));
+ }
return NULL;
}
*whennext = s->fr.samples = 240;
diff --git a/formats/format_g726.c b/formats/format_g726.c
index 22ed41d..b2d34e6 100644
--- a/formats/format_g726.c
+++ b/formats/format_g726.c
@@ -126,8 +126,16 @@
AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, frame_size[fs->rate]);
s->fr.samples = 8 * FRAME_TIME;
if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
- if (res)
- ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
+ if (feof(s->f)) {
+ if (res) {
+ ast_log(LOG_WARNING, "Incomplete frame data at end of %s file "
+ "(expected %d bytes, read %d)\n",
+ ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res);
+ }
+ } else {
+ ast_log(LOG_ERROR, "Error while reading %s file: %s\n",
+ ast_format_get_name(s->fr.subclass.format), strerror(errno));
+ }
return NULL;
}
*whennext = s->fr.samples;
diff --git a/formats/format_g729.c b/formats/format_g729.c
index f9de0ec..f1bc79e 100644
--- a/formats/format_g729.c
+++ b/formats/format_g729.c
@@ -53,8 +53,16 @@
s->fr.samples = G729A_SAMPLES;
AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE);
if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
- if (res && (res != 10)) /* XXX what for ? */
- ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
+ if (feof(s->f)) {
+ if (res) {
+ ast_log(LOG_WARNING, "Incomplete frame data at end of %s file "
+ "(expected %d bytes, read %d)\n",
+ ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res);
+ }
+ } else {
+ ast_log(LOG_ERROR, "Error while reading %s file: %s\n",
+ ast_format_get_name(s->fr.subclass.format), strerror(errno));
+ }
return NULL;
}
*whennext = s->fr.samples;
diff --git a/formats/format_gsm.c b/formats/format_gsm.c
index c824748..12074b7 100644
--- a/formats/format_gsm.c
+++ b/formats/format_gsm.c
@@ -57,10 +57,18 @@
{
int res;
- AST_FRAME_SET_BUFFER(&(s->fr), s->buf, AST_FRIENDLY_OFFSET, GSM_FRAME_SIZE)
+ AST_FRAME_SET_BUFFER(&(s->fr), s->buf, AST_FRIENDLY_OFFSET, GSM_FRAME_SIZE);
if ((res = fread(s->fr.data.ptr, 1, GSM_FRAME_SIZE, s->f)) != GSM_FRAME_SIZE) {
- if (res)
- ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
+ if (feof(s->f)) {
+ if (res) {
+ ast_log(LOG_WARNING, "Incomplete frame data at end of %s file "
+ "(expected %d bytes, read %d)\n",
+ ast_format_get_name(s->fr.subclass.format), GSM_FRAME_SIZE, res);
+ }
+ } else {
+ ast_log(LOG_ERROR, "Error while reading %s file: %s\n",
+ ast_format_get_name(s->fr.subclass.format), strerror(errno));
+ }
return NULL;
}
*whennext = s->fr.samples = GSM_SAMPLES;
@@ -133,7 +141,7 @@
int i;
fseeko(fs->f, 0, SEEK_END);
for (i=0; i< (offset - max) / GSM_FRAME_SIZE; i++) {
- if (!fwrite(gsm_silence, 1, GSM_FRAME_SIZE, fs->f)) {
+ if (fwrite(gsm_silence, 1, GSM_FRAME_SIZE, fs->f) != GSM_FRAME_SIZE) {
ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
}
}
diff --git a/formats/format_h263.c b/formats/format_h263.c
index 86abed5..d008d61 100644
--- a/formats/format_h263.c
+++ b/formats/format_h263.c
@@ -60,7 +60,7 @@
{
unsigned int ts;
- if (fread(&ts, 1, sizeof(ts), s->f) < sizeof(ts)) {
+ if (fread(&ts, 1, sizeof(ts), s->f) != sizeof(ts)) {
ast_log(LOG_WARNING, "Empty file!\n");
return -1;
}
@@ -76,7 +76,7 @@
struct h263_desc *fs = (struct h263_desc *)s->_private;
/* Send a frame from the file to the appropriate channel */
- if ((res = fread(&len, 1, sizeof(len), s->f)) < 1)
+ if ((res = fread(&len, 1, sizeof(len), s->f)) != sizeof(len))
return NULL;
len = ntohs(len);
mark = (len & FRAME_ENDED) ? 1 : 0;
@@ -87,8 +87,16 @@
}
AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, len);
if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
- if (res)
- ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
+ if (feof(s->f)) {
+ if (res) {
+ ast_log(LOG_WARNING, "Incomplete frame data at end of %s file "
+ "(expected %d bytes, read %d)\n",
+ ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res);
+ }
+ } else {
+ ast_log(LOG_ERROR, "Error while reading %s file: %s\n",
+ ast_format_get_name(s->fr.subclass.format), strerror(errno));
+ }
return NULL;
}
s->fr.samples = fs->lastts; /* XXX what ? */
diff --git a/formats/format_h264.c b/formats/format_h264.c
index 3e82830..1b62e49 100644
--- a/formats/format_h264.c
+++ b/formats/format_h264.c
@@ -52,7 +52,7 @@
static int h264_open(struct ast_filestream *s)
{
unsigned int ts;
- if (fread(&ts, 1, sizeof(ts), s->f) < sizeof(ts)) {
+ if (fread(&ts, 1, sizeof(ts), s->f) != sizeof(ts)) {
ast_log(LOG_WARNING, "Empty file!\n");
return -1;
}
@@ -68,7 +68,7 @@
struct h264_desc *fs = (struct h264_desc *)s->_private;
/* Send a frame from the file to the appropriate channel */
- if ((res = fread(&len, 1, sizeof(len), s->f)) < 1)
+ if ((res = fread(&len, 1, sizeof(len), s->f)) != sizeof(len))
return NULL;
len = ntohs(len);
mark = (len & FRAME_ENDED) ? 1 : 0;
@@ -79,8 +79,16 @@
}
AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, len);
if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
- if (res)
- ast_log(LOG_WARNING, "Short read (%d of %d) (%s)!\n", res, len, strerror(errno));
+ if (feof(s->f)) {
+ if (res) {
+ ast_log(LOG_WARNING, "Incomplete frame data at end of %s file "
+ "(expected %d bytes, read %d)\n",
+ ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res);
+ }
+ } else {
+ ast_log(LOG_ERROR, "Error while reading %s file: %s\n",
+ ast_format_get_name(s->fr.subclass.format), strerror(errno));
+ }
return NULL;
}
s->fr.samples = fs->lastts;
diff --git a/formats/format_ilbc.c b/formats/format_ilbc.c
index 3cfa8e6..ff88d50 100644
--- a/formats/format_ilbc.c
+++ b/formats/format_ilbc.c
@@ -51,8 +51,16 @@
/* Send a frame from the file to the appropriate channel */
AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, ILBC_BUF_SIZE);
if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
- if (res)
- ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
+ if (feof(s->f)) {
+ if (res) {
+ ast_log(LOG_WARNING, "Incomplete frame data at end of %s file "
+ "(expected %d bytes, read %d)\n",
+ ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res);
+ }
+ } else {
+ ast_log(LOG_ERROR, "Error while reading %s file: %s\n",
+ ast_format_get_name(s->fr.subclass.format), strerror(errno));
+ }
return NULL;
}
*whennext = s->fr.samples = ILBC_SAMPLES;
diff --git a/formats/format_ogg_vorbis.c b/formats/format_ogg_vorbis.c
index 17b529e..9fca5db 100644
--- a/formats/format_ogg_vorbis.c
+++ b/formats/format_ogg_vorbis.c
@@ -183,10 +183,10 @@
while (!tmp->eos) {
if (ogg_stream_flush(&tmp->os, &tmp->og) == 0)
break;
- if (!fwrite(tmp->og.header, 1, tmp->og.header_len, s->f)) {
+ if (fwrite(tmp->og.header, 1, tmp->og.header_len, s->f) != tmp->og.header_len) {
ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
}
- if (!fwrite(tmp->og.body, 1, tmp->og.body_len, s->f)) {
+ if (fwrite(tmp->og.body, 1, tmp->og.body_len, s->f) != tmp->og.body_len) {
ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
}
if (ogg_page_eos(&tmp->og))
@@ -213,10 +213,10 @@
if (ogg_stream_pageout(&s->os, &s->og) == 0) {
break;
}
- if (!fwrite(s->og.header, 1, s->og.header_len, f)) {
- ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
+ if (fwrite(s->og.header, 1, s->og.header_len, f) != s->og.header_len) {
+ ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
}
- if (!fwrite(s->og.body, 1, s->og.body_len, f)) {
+ if (fwrite(s->og.body, 1, s->og.body_len, f) != s->og.body_len) {
ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
}
if (ogg_page_eos(&s->og)) {
diff --git a/formats/format_pcm.c b/formats/format_pcm.c
index 6e72f06..b2cd20d 100644
--- a/formats/format_pcm.c
+++ b/formats/format_pcm.c
@@ -85,9 +85,17 @@
/* Send a frame from the file to the appropriate channel */
AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE);
- if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) < 1) {
- if (res)
- ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
+ if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
+ if (feof(s->f)) {
+ if (res) {
+ ast_log(LOG_WARNING, "Incomplete frame data at end of %s file "
+ "(expected %d bytes, read %d)\n",
+ ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res);
+ }
+ } else {
+ ast_log(LOG_ERROR, "Error while reading %s file: %s\n",
+ ast_format_get_name(s->fr.subclass.format), strerror(errno));
+ }
return NULL;
}
s->fr.datalen = res;
@@ -142,9 +150,10 @@
const char *src = (ast_format_cmp(fs->fmt->format, ast_format_alaw) == AST_FORMAT_CMP_EQUAL) ? alaw_silence : ulaw_silence;
while (left) {
- size_t written = fwrite(src, 1, (left > BUF_SIZE) ? BUF_SIZE : left, fs->f);
- if (written == -1)
+ size_t written = fwrite(src, 1, MIN(left, BUF_SIZE), fs->f);
+ if (written < MIN(left, BUF_SIZE)) {
break; /* error */
+ }
left -= written;
}
ret = 0; /* successful */
@@ -212,7 +221,10 @@
to_write = fpos - cur;
if (to_write > sizeof(buf))
to_write = sizeof(buf);
- fwrite(buf, 1, to_write, fs->f);
+ if (fwrite(buf, 1, to_write, fs->f) != to_write) {
+ ast_log(LOG_ERROR, "Failed to write to file: %s\n", strerror(errno));
+ return -1;
+ }
cur += to_write;
}
}
diff --git a/formats/format_siren14.c b/formats/format_siren14.c
index 71de82e..1f013d2 100644
--- a/formats/format_siren14.c
+++ b/formats/format_siren14.c
@@ -47,8 +47,16 @@
AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE);
if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
- if (res)
- ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
+ if (feof(s->f)) {
+ if (res) {
+ ast_log(LOG_WARNING, "Incomplete frame data at end of %s file "
+ "(expected %d bytes, read %d)\n",
+ ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res);
+ }
+ } else {
+ ast_log(LOG_ERROR, "Error while reading %s file: %s\n",
+ ast_format_get_name(s->fr.subclass.format), strerror(errno));
+ }
return NULL;
}
*whennext = s->fr.samples = BYTES_TO_SAMPLES(res);
diff --git a/formats/format_siren7.c b/formats/format_siren7.c
index 2fcc131..38c7512 100644
--- a/formats/format_siren7.c
+++ b/formats/format_siren7.c
@@ -47,8 +47,16 @@
AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE);
if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
- if (res)
- ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
+ if (feof(s->f)) {
+ if (res) {
+ ast_log(LOG_WARNING, "Incomplete frame data at end of %s file "
+ "(expected %d bytes, read %d)\n",
+ ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res);
+ }
+ } else {
+ ast_log(LOG_ERROR, "Error while reading %s file: %s\n",
+ ast_format_get_name(s->fr.subclass.format), strerror(errno));
+ }
return NULL;
}
*whennext = s->fr.samples = BYTES_TO_SAMPLES(res);
diff --git a/formats/format_sln.c b/formats/format_sln.c
index 99f70fc..dff25d1 100644
--- a/formats/format_sln.c
+++ b/formats/format_sln.c
@@ -40,9 +40,17 @@
/* Send a frame from the file to the appropriate channel */
AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, buf_size);
- if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) < 1) {
- if (res)
- ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
+ if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
+ if (feof(s->f)) {
+ if (res) {
+ ast_log(LOG_WARNING, "Incomplete frame data at end of %s file "
+ "(expected %d bytes, read %d)\n",
+ ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res);
+ }
+ } else {
+ ast_log(LOG_ERROR, "Error while reading %s file: %s\n",
+ ast_format_get_name(s->fr.subclass.format), strerror(errno));
+ }
return NULL;
}
*whennext = s->fr.samples = res/2;
diff --git a/formats/format_vox.c b/formats/format_vox.c
index 582b94f..94b37bf 100644
--- a/formats/format_vox.c
+++ b/formats/format_vox.c
@@ -46,9 +46,17 @@
/* Send a frame from the file to the appropriate channel */
AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE);
- if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) < 1) {
- if (res)
- ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
+ if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
+ if (feof(s->f)) {
+ if (res) {
+ ast_log(LOG_WARNING, "Incomplete frame data at end of %s file "
+ "(expected %d bytes, read %d)\n",
+ ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res);
+ }
+ } else {
+ ast_log(LOG_ERROR, "Error while reading %s file: %s\n",
+ ast_format_get_name(s->fr.subclass.format), strerror(errno));
+ }
return NULL;
}
*whennext = s->fr.samples = res * 2;
diff --git a/formats/format_wav.c b/formats/format_wav.c
index d06931e..63df635 100644
--- a/formats/format_wav.c
+++ b/formats/format_wav.c
@@ -363,7 +363,7 @@
/* Pad to even length */
if (fs->bytes & 0x1) {
- if (!fwrite(&zero, 1, 1, s->f)) {
+ if (fwrite(&zero, 1, 1, s->f) != 1) {
ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
}
}
@@ -387,14 +387,23 @@
here = ftello(s->f);
if (fs->maxlen - here < bytes) /* truncate if necessary */
bytes = fs->maxlen - here;
- if (bytes < 0)
- bytes = 0;
+ if (bytes <= 0) {
+ return NULL;
+ }
/* ast_debug(1, "here: %d, maxlen: %d, bytes: %d\n", here, s->maxlen, bytes); */
AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, bytes);
-
- if ( (res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) <= 0 ) {
- if (res)
- ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
+
+ if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
+ if (feof(s->f)) {
+ if (res) {
+ ast_log(LOG_WARNING, "Incomplete frame data at end of %s file "
+ "(expected %d bytes, read %d)\n",
+ ast_format_get_name(s->fr.subclass.format), s->fr.datalen, res);
+ }
+ } else {
+ ast_log(LOG_ERROR, "Error while reading %s file: %s\n",
+ ast_format_get_name(s->fr.subclass.format), strerror(errno));
+ }
return NULL;
}
s->fr.datalen = res;
diff --git a/formats/format_wav_gsm.c b/formats/format_wav_gsm.c
index 240ba3b..049ceca 100644
--- a/formats/format_wav_gsm.c
+++ b/formats/format_wav_gsm.c
@@ -424,8 +424,16 @@
int res;
if ((res = fread(msdata, 1, MSGSM_FRAME_SIZE, s->f)) != MSGSM_FRAME_SIZE) {
- if (res && (res != 1))
- ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
+ if (feof(s->f)) {
+ if (res) {
+ ast_log(LOG_WARNING, "Incomplete frame data at end of %s file "
+ "(expected %d bytes, read %d)\n",
+ ast_format_get_name(s->fr.subclass.format), MSGSM_FRAME_SIZE, res);
+ }
+ } else {
+ ast_log(LOG_ERROR, "Error while reading %s file: %s\n",
+ ast_format_get_name(s->fr.subclass.format), strerror(errno));
+ }
return NULL;
}
/* Convert from MS format to two real GSM frames */
@@ -513,7 +521,7 @@
int i;
fseek(fs->f, 0, SEEK_END);
for (i=0; i< (offset - max) / MSGSM_FRAME_SIZE; i++) {
- if (!fwrite(msgsm_silence, 1, MSGSM_FRAME_SIZE, fs->f)) {
+ if (fwrite(msgsm_silence, 1, MSGSM_FRAME_SIZE, fs->f) != MSGSM_FRAME_SIZE) {
ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
}
}
diff --git a/main/http.c b/main/http.c
index 7565523..907f102 100644
--- a/main/http.c
+++ b/main/http.c
@@ -526,6 +526,10 @@
/* send content */
if (method != AST_HTTP_HEAD || status_code >= 400) {
if (out && ast_str_strlen(out)) {
+ /*
+ * NOTE: Because ser->f is a non-standard FILE *, fwrite() will probably not
+ * behave exactly as documented.
+ */
if (fwrite(ast_str_buffer(out), ast_str_strlen(out), 1, ser->f) != 1) {
ast_log(LOG_ERROR, "fwrite() failed: %s\n", strerror(errno));
close_connection = 1;
@@ -537,6 +541,10 @@
int len;
while ((len = read(fd, buf, sizeof(buf))) > 0) {
+ /*
+ * NOTE: Because ser->f is a non-standard FILE *, fwrite() will probably not
+ * behave exactly as documented.
+ */
if (fwrite(buf, len, 1, ser->f) != 1) {
ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
close_connection = 1;
@@ -923,6 +931,11 @@
{
int res;
+ /*
+ * NOTE: Because ser->f is a non-standard FILE *, fread() does not behave as
+ * documented.
+ */
+
/* Stay in fread until get all the expected data or timeout. */
res = fread(buf, length, 1, ser->f);
if (res < 1) {
@@ -949,6 +962,11 @@
{
int res;
char buf[MAX_HTTP_LINE_LENGTH];/* Discard buffer */
+
+ /*
+ * NOTE: Because ser->f is a non-standard FILE *, fread() does not behave as
+ * documented.
+ */
/* Stay in fread until get all the expected data or timeout. */
while (sizeof(buf) < length) {
@@ -1066,6 +1084,11 @@
int res;
char chunk_sync[2];
+ /*
+ * NOTE: Because ser->f is a non-standard FILE *, fread() does not behave as
+ * documented.
+ */
+
/* Stay in fread until get the expected CRLF or timeout. */
res = fread(chunk_sync, sizeof(chunk_sync), 1, ser->f);
if (res < 1) {
diff --git a/main/manager.c b/main/manager.c
index c7f4092..c3628a3 100644
--- a/main/manager.c
+++ b/main/manager.c
@@ -6500,6 +6500,12 @@
}
ao2_lock(s->session);
+ /*
+ * It is worth noting here that you can all but ignore fread()'s documentation
+ * for the purposes of this call. The FILE * we are working with here was created
+ * as a result of a call to fopencookie() (or equivalent) in tcptls.c, and as such
+ * the behavior of fread() is not as documented. Frankly, I think this is gross.
+ */
res = fread(src + s->session->inlen, 1, maxlen - s->session->inlen, s->session->f);
if (res < 1) {
res = -1; /* error return */
--
To view, visit https://gerrit.asterisk.org/5511
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Gerrit-MessageType: merged
Gerrit-Change-Id: I8ca1cd47c20b2c0b72088bd13b9046f6977aa872
Gerrit-PatchSet: 4
Gerrit-Project: asterisk
Gerrit-Branch: 14
Gerrit-Owner: Sean Bright <sean.bright at gmail.com>
Gerrit-Reviewer: George Joseph <gjoseph at digium.com>
Gerrit-Reviewer: Jenkins2
Gerrit-Reviewer: Joshua Colp <jcolp at digium.com>
Gerrit-Reviewer: Kevin Harwell <kharwell at digium.com>
Gerrit-Reviewer: Richard Mudgett <rmudgett at digium.com>
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