summaryrefslogtreecommitdiff
path: root/libbb
diff options
context:
space:
mode:
Diffstat (limited to 'libbb')
-rw-r--r--libbb/bb_asprintf.c89
-rw-r--r--libbb/xconnect.c5
2 files changed, 91 insertions, 3 deletions
diff --git a/libbb/bb_asprintf.c b/libbb/bb_asprintf.c
new file mode 100644
index 0000000..c0c5cde
--- /dev/null
+++ b/libbb/bb_asprintf.c
@@ -0,0 +1,89 @@
+/*
+ Copyright (C) 2002 Vladimir Oleynik <dzo@simtreas.ru>
+*/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+
+#ifdef TEST
+extern void *xrealloc(void *p, size_t size);
+#else
+#include "libbb.h" /* busybox source */
+#endif
+
+
+/* Exchange glibc vasprintf - minimize allocate memory version */
+/* libc5 and uclibc have not vasprintf function */
+void bb_vasprintf(char **string_ptr, const char *format, va_list args)
+{
+ int bs = 128;
+ char stack_buff[128];
+ char *buff = stack_buff;
+ int done;
+
+ /* two or more loop, first - calculate memory size only */
+ while(1) {
+ done = vsnprintf (buff, bs, format, args);
+/* Different libc have different interpretation vsnprintf returned value */
+ if(done >= 0) {
+ if(done < bs && buff != stack_buff) {
+ /* allocated */
+ *string_ptr = buff;
+ return;
+ } else {
+ /* true calculate memory size */
+ bs = done+1;
+ }
+ } else {
+ /*
+ * Old libc. Incrementaly test.
+ * Exact not minimize allocate memory.
+ */
+ bs += 128;
+ }
+ buff = xrealloc((buff == stack_buff ? NULL : buff), bs);
+ }
+}
+
+void bb_asprintf(char **string_ptr, const char *format, ...)
+{
+ va_list p;
+
+ va_start(p, format);
+ bb_vasprintf(string_ptr, format, p);
+ va_end(p);
+}
+
+#ifdef TEST
+int main(int argc, char **argv)
+{
+ char *out_buf;
+ char big_buf[200];
+ int i;
+
+ bb_asprintf(&out_buf, "Hi!\nargc=%d argv[0]=%s\n", argc, argv[0]);
+ printf(out_buf);
+ free(out_buf);
+
+ for(i=0; i < sizeof(big_buf)-1; i++)
+ big_buf[i]='x';
+ big_buf[i]=0;
+ bb_asprintf(&out_buf, "Test Big\n%s\n", big_buf);
+ printf(out_buf);
+ free(out_buf);
+
+ return 0;
+}
+
+void *xrealloc(void *p, size_t size)
+{
+ void *p2 = realloc(p, size);
+ if(p2==0) {
+ fprintf(stderr, "TEST: memory_exhausted\n");
+ exit(1);
+ }
+ return p2;
+}
+#endif
diff --git a/libbb/xconnect.c b/libbb/xconnect.c
index 9e77149..f3a1b44 100644
--- a/libbb/xconnect.c
+++ b/libbb/xconnect.c
@@ -6,7 +6,6 @@
*
*/
-#include "inet_common.h"
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
@@ -58,7 +57,7 @@ int xconnect(const char *host, const char *port)
struct sockaddr_in s_addr;
int s = socket(AF_INET, SOCK_STREAM, 0);
struct servent *tserv;
- int port_nr=atoi(port);
+ int port_nr=htons(atoi(port));
struct hostent * he;
if (port_nr==0 && (tserv = getservbyname(port, "tcp")) != NULL)
@@ -66,7 +65,7 @@ int xconnect(const char *host, const char *port)
memset(&s_addr, 0, sizeof(struct sockaddr_in));
s_addr.sin_family = AF_INET;
- s_addr.sin_port = htons(port_nr);
+ s_addr.sin_port = port_nr;
he = xgethostbyname(host);
memcpy(&s_addr.sin_addr, he->h_addr, sizeof s_addr.sin_addr);