summaryrefslogtreecommitdiff
path: root/networking/udhcp/files.c
diff options
context:
space:
mode:
Diffstat (limited to 'networking/udhcp/files.c')
-rw-r--r--networking/udhcp/files.c54
1 files changed, 32 insertions, 22 deletions
diff --git a/networking/udhcp/files.c b/networking/udhcp/files.c
index 317e861..2c2c542 100644
--- a/networking/udhcp/files.c
+++ b/networking/udhcp/files.c
@@ -272,27 +272,32 @@ int read_config(const char *file)
if (keywords[i].def[0])
keywords[i].handler(keywords[i].def, keywords[i].var);
- if (!(in = fopen(file, "r"))) {
- bb_error_msg("unable to open config file: %s", file);
+ in = fopen(file, "r");
+ if (!in) {
+ bb_error_msg("cannot open config file: %s", file);
return 0;
}
while (fgets(buffer, READ_CONFIG_BUF_SIZE, in)) {
char debug_orig[READ_CONFIG_BUF_SIZE];
+ char *p;
lm++;
- if (strchr(buffer, '\n')) *(strchr(buffer, '\n')) = '\0';
+ p = strchr(buffer, '\n');
+ if (p) *p = '\0';
if (ENABLE_FEATURE_UDHCP_DEBUG) strcpy(debug_orig, buffer);
- if (strchr(buffer, '#')) *(strchr(buffer, '#')) = '\0';
+ p = strchr(buffer, '#');
+ if (p) *p = '\0';
if (!(token = strtok(buffer, " \t"))) continue;
if (!(line = strtok(NULL, ""))) continue;
/* eat leading whitespace */
- line = line + strspn(line, " \t=");
+ line = skip_whitespace(line);
/* eat trailing whitespace */
- for (i = strlen(line); i > 0 && isspace(line[i - 1]); i--);
- line[i] = '\0';
+ i = strlen(line) - 1;
+ while (i >= 0 && isspace(line[i]))
+ line[i--] = '\0';
for (i = 0; keywords[i].keyword[0]; i++)
if (!strcasecmp(token, keywords[i].keyword))
@@ -311,14 +316,14 @@ int read_config(const char *file)
void write_leases(void)
{
- FILE *fp;
- unsigned int i;
- char buf[255];
+ int fp;
+ unsigned i;
time_t curr = time(0);
unsigned long tmp_time;
- if (!(fp = fopen(server_config.lease_file, "w"))) {
- bb_error_msg("unable to open %s for writing", server_config.lease_file);
+ fp = open(server_config.lease_file, O_WRONLY|O_CREAT|O_TRUNC, 0666);
+ if (fp < 0) {
+ bb_error_msg("cannot open %s for writing", server_config.lease_file);
return;
}
@@ -334,33 +339,38 @@ void write_leases(void)
else leases[i].expires -= curr;
} /* else stick with the time we got */
leases[i].expires = htonl(leases[i].expires);
- fwrite(&leases[i], sizeof(struct dhcpOfferedAddr), 1, fp);
+ // FIXME: error check??
+ full_write(fp, &leases[i], sizeof(leases[i]));
- /* Then restore it when done. */
+ /* then restore it when done */
leases[i].expires = tmp_time;
}
}
- fclose(fp);
+ close(fp);
if (server_config.notify_file) {
- sprintf(buf, "%s %s", server_config.notify_file, server_config.lease_file);
- system(buf);
+ char *cmd = xasprintf("%s %s", server_config.notify_file, server_config.lease_file);
+ system(cmd);
+ free(cmd);
}
}
void read_leases(const char *file)
{
- FILE *fp;
+ int fp;
unsigned int i = 0;
struct dhcpOfferedAddr lease;
- if (!(fp = fopen(file, "r"))) {
- bb_error_msg("unable to open %s for reading", file);
+ fp = open(file, O_RDONLY);
+ if (fp < 0) {
+ bb_error_msg("cannot open %s for reading", file);
return;
}
- while (i < server_config.max_leases && (fread(&lease, sizeof lease, 1, fp) == 1)) {
+ while (i < server_config.max_leases
+ && full_read(fp, &lease, sizeof(lease)) == sizeof(lease)
+ ) {
/* ADDME: is it a static lease */
if (lease.yiaddr >= server_config.start && lease.yiaddr <= server_config.end) {
lease.expires = ntohl(lease.expires);
@@ -373,5 +383,5 @@ void read_leases(const char *file)
}
}
DEBUG("Read %d leases", i);
- fclose(fp);
+ close(fp);
}