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Added -DMONGOOSE_HEXDUMP feature

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This commit is contained in:
Sergey Lyubka 2014-02-09 20:57:11 +00:00
parent fbd5d77ce8
commit 5dc317fcb0
2 changed files with 54 additions and 0 deletions
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3
docs/Embed.md
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@ -95,6 +95,9 @@ a couple of kilobytes to the executable size, and also has some runtime penalty.
-DMONGOOSE_USE_STACK_SIZE=X Let mg_start_thread() use stack
size X, default is OS default
-DMONGOOSE_ENABLE_DEBUG Enables debug messages on stdout, very noisy
-DMONGOOSE_HEXDUMP=\"XXX\" Enables hexdump of sent and received traffic
to the text files. XXX must be a prefix of the
IP address whose traffic must be hexdumped.
Mongoose source code contains a well-commented example code, listed below:

51
mongoose.c
View File

@ -2026,6 +2026,42 @@ static void callback_http_client_on_connect(struct connection *conn) {
}
}
#ifdef MONGOOSE_HEXDUMP
static void hexdump(const struct connection *conn, const void *buf,
int len, const char *marker) {
const unsigned char *p = (const unsigned char *) buf;
char path[MAX_PATH_SIZE], date[100], ascii[17];
FILE *fp;
snprintf(path, sizeof(path), "%s.%hu.txt",
conn->mg_conn.remote_ip, conn->mg_conn.remote_port);
if ((fp = fopen(path, "a")) != NULL) {
time_t cur_time = time(NULL);
int i, idx;
strftime(date, sizeof(date), "%d/%b/%Y %H:%M:%S", localtime(&cur_time));
fprintf(fp, "%s %s %d bytes\n", marker, date, len);
for (i = 0; i < len; i++) {
idx = i % 16;
if (idx == 0) {
if (i > 0) fprintf(fp, " %s\n", ascii);
fprintf(fp, "%04x ", i);
}
fprintf(fp, " %02x", p[i]);
ascii[idx] = p[i] < 0x20 || p[i] > 0x7e ? '.' : p[i];
ascii[idx + 1] = '\0';
}
while (i++ % 16) fprintf(fp, "%s", " ");
fprintf(fp, " %s\n\n", ascii);
fclose(fp);
}
}
#endif
static void write_to_socket(struct connection *conn) {
struct iobuf *io = &conn->remote_iobuf;
int n = 0;
@ -2045,6 +2081,13 @@ static void write_to_socket(struct connection *conn) {
DBG(("%p Written %d of %d(%d): [%.*s ...]",
conn, n, io->len, io->size, io->len < 40 ? io->len : 40, io->buf));
#ifdef MONGOOSE_HEXDUMP
if (match_prefix(MONGOOSE_HEXDUMP, strlen(MONGOOSE_HEXDUMP),
conn->mg_conn.remote_ip)) {
hexdump(conn, io->buf, n, "->");
}
#endif
if (is_error(n)) {
conn->flags |= CONN_CLOSE;
} else if (n > 0) {
@ -3654,6 +3697,14 @@ static void read_from_socket(struct connection *conn) {
}
DBG(("%p %d %d (1)", conn, n, conn->flags));
#ifdef MONGOOSE_HEXDUMP
if (match_prefix(MONGOOSE_HEXDUMP, strlen(MONGOOSE_HEXDUMP),
conn->mg_conn.remote_ip)) {
hexdump(conn, buf, n, "<-");
}
#endif
if (is_error(n)) {
if (conn->endpoint_type == EP_CLIENT && conn->local_iobuf.len > 0) {
call_http_client_handler(conn, MG_DOWNLOAD_SUCCESS);