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FS-4614 --resolve update to dynamic line buffer and use internal buffering to boot for file I/O on preprocessing XML

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This commit is contained in:
Anthony Minessale
2012-09-18 15:39:23 -05:00
parent 1b2b456510
commit c5204c2128
4 changed files with 163 additions and 37 deletions
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src/switch_xml.c
+52 -28
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@@ -104,7 +104,7 @@ void globfree(glob_t *);
/* Use UTF-8 as the general encoding */
static switch_bool_t USE_UTF_8_ENCODING = SWITCH_TRUE;
static int preprocess(const char *cwd, const char *file, int write_fd, int rlevel);
static int preprocess(const char *cwd, const char *file, FILE *write_fd, int rlevel);
typedef struct switch_xml_root *switch_xml_root_t;
struct switch_xml_root { /* additional data for the root tag */
@@ -1224,12 +1224,12 @@ static char *expand_vars(char *buf, char *ebuf, switch_size_t elen, switch_size_
return ebuf;
}
static int preprocess_exec(const char *cwd, const char *command, int write_fd, int rlevel)
static FILE *preprocess_exec(const char *cwd, const char *command, FILE *write_fd, int rlevel)
{
#ifdef WIN32
char message[] = "<!-- exec not implemented in windows yet -->";
if (write(write_fd, message, sizeof(message)) < 0) {
if (fwrite( message, 1, sizeof(message), write_fd) < 0) {
goto end;
}
#else
@@ -1249,7 +1249,7 @@ static int preprocess_exec(const char *cwd, const char *command, int write_fd, i
int bytes;
close(fds[1]);
while ((bytes = read(fds[0], buf, sizeof(buf))) > 0) {
if (write(write_fd, buf, bytes) <= 0) {
if (fwrite(buf, 1, bytes, write_fd) <= 0) {
break;
}
}
@@ -1271,7 +1271,7 @@ static int preprocess_exec(const char *cwd, const char *command, int write_fd, i
}
static int preprocess_glob(const char *cwd, const char *pattern, int write_fd, int rlevel)
static FILE *preprocess_glob(const char *cwd, const char *pattern, FILE *write_fd, int rlevel)
{
char *full_path = NULL;
char *dir_path = NULL, *e = NULL;
@@ -1310,28 +1310,43 @@ static int preprocess_glob(const char *cwd, const char *pattern, int write_fd, i
return write_fd;
}
static int preprocess(const char *cwd, const char *file, int write_fd, int rlevel)
static int preprocess(const char *cwd, const char *file, FILE *write_fd, int rlevel)
{
int read_fd = -1;
FILE *read_fd = NULL;
switch_size_t cur = 0, ml = 0;
char *q, *cmd, buf[2048], ebuf[8192];
char *q, *cmd, *buf = NULL, *ebuf = NULL;
char *tcmd, *targ;
int line = 0;
if ((read_fd = open(file, O_RDONLY, 0)) < 0) {
const char *reason = strerror(errno);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Couldnt open %s (%s)\n", file, reason);
return read_fd;
}
switch_size_t len = 0, eblen = 0;
if (rlevel > 100) {
return -1;
}
while ((cur = switch_fd_read_line(read_fd, buf, sizeof(buf))) > 0) {
if (!(read_fd = fopen(file, "r"))) {
const char *reason = strerror(errno);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Couldnt open %s (%s)\n", file, reason);
return -1;
}
setvbuf(read_fd, (char *) NULL, _IOFBF, 65536);
for(;;) {
char *arg, *e;
const char *err = NULL;
char *bp = expand_vars(buf, ebuf, sizeof(ebuf), &cur, &err);
char *bp;
switch_safe_free(ebuf);
if ((cur = switch_fp_read_dline(read_fd, &buf, &len)) <= 0) {
break;
}
eblen = len *2;
ebuf = malloc(eblen);
memset(ebuf, 0, eblen);
bp = expand_vars(buf, ebuf, eblen, &cur, &err);
line++;
if (err) {
@@ -1360,7 +1375,7 @@ static int preprocess(const char *cwd, const char *file, int write_fd, int rleve
if ((e = strstr(tcmd, "/>"))) {
*e += 2;
*e = '\0';
if (write(write_fd, e, (unsigned) strlen(e)) != (int) strlen(e)) {
if (fwrite(e, 1, (unsigned) strlen(e), write_fd) != (int) strlen(e)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Short write!\n");
}
}
@@ -1431,13 +1446,13 @@ static int preprocess(const char *cwd, const char *file, int write_fd, int rleve
}
if ((cmd = strstr(bp, "<!--#"))) {
if (write(write_fd, bp, (unsigned) (cmd - bp)) != (cmd - bp)) {
if (fwrite(bp, 1, (unsigned) (cmd - bp), write_fd) != (cmd - bp)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Short write!\n");
}
if ((e = strstr(cmd, "-->"))) {
*e = '\0';
e += 3;
if (write(write_fd, e, (unsigned) strlen(e)) != (int) strlen(e)) {
if (fwrite(e, 1, (unsigned) strlen(e), write_fd) != (int) strlen(e)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Short write!\n");
}
} else {
@@ -1489,13 +1504,18 @@ static int preprocess(const char *cwd, const char *file, int write_fd, int rleve
continue;
}
if (write(write_fd, bp, (unsigned) cur) != (int) cur) {
if (fwrite(bp, 1, (unsigned) cur, write_fd) != (int) cur) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Short write!\n");
}
}
close(read_fd);
return write_fd;
switch_safe_free(buf);
switch_safe_free(ebuf);
fclose(read_fd);
return 0;
}
SWITCH_DECLARE(switch_xml_t) switch_xml_parse_file_simple(const char *file)
@@ -1527,7 +1547,8 @@ SWITCH_DECLARE(switch_xml_t) switch_xml_parse_file_simple(const char *file)
SWITCH_DECLARE(switch_xml_t) switch_xml_parse_file(const char *file)
{
int fd = -1, write_fd = -1;
int fd = -1;
FILE *write_fd = NULL;
switch_xml_t xml = NULL;
char *new_file = NULL;
const char *abs, *absw;
@@ -1546,13 +1567,15 @@ SWITCH_DECLARE(switch_xml_t) switch_xml_parse_file(const char *file)
goto done;
}
if ((write_fd = open(new_file, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR)) < 0) {
if ((write_fd = fopen(new_file, "w+")) == NULL) {
goto done;
}
setvbuf(write_fd, (char *) NULL, _IOFBF, 65536);
if (preprocess(SWITCH_GLOBAL_dirs.conf_dir, file, write_fd, 0) > -1) {
close(write_fd);
write_fd = -1;
fclose(write_fd);
write_fd = NULL;
if ((fd = open(new_file, O_RDONLY, 0)) > -1) {
if ((xml = switch_xml_parse_fd(fd))) {
xml->free_path = new_file;
@@ -1567,8 +1590,9 @@ SWITCH_DECLARE(switch_xml_t) switch_xml_parse_file(const char *file)
switch_mutex_unlock(FILE_LOCK);
if (write_fd > -1) {
close(write_fd);
if (write_fd) {
fclose(write_fd);
write_fd = NULL;
}
if (fd > -1) {