diff options
Diffstat (limited to 'src/ipcalc.c')
| -rw-r--r-- | src/ipcalc.c | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/src/ipcalc.c b/src/ipcalc.c index ad279587..d981be83 100644 --- a/src/ipcalc.c +++ b/src/ipcalc.c @@ -239,13 +239,6 @@ int main(int argc, const char **argv) { } else prefixStr = NULL; - if (!inet_aton(ipStr, &ip)) { - if (!beSilent) - fprintf(stderr, "ipcalc: bad ip address: %s\n", - ipStr); - return 1; - } - if (prefixStr != NULL) { prefix = atoi(prefixStr); if (prefix == 0) { @@ -264,6 +257,12 @@ int main(int argc, const char **argv) { poptPrintHelp(optCon, stderr, 0); } return 1; + } else if (netmaskStr && prefix != 0) { + if (!beSilent) { + fprintf(stderr, "ipcalc: both netmask and prefix specified\n"); + poptPrintHelp(optCon, stderr, 0); + } + return 1; } else if (netmaskStr) { if (!inet_aton(netmaskStr, &netmask)) { if (!beSilent) @@ -283,6 +282,26 @@ int main(int argc, const char **argv) { return 1; } + /* Handle CIDR entries such as 172/8 */ + if (prefix) { + char *tmp = ipStr; + int i; + + for(i=3; i> 0; i--) { + tmp = strchr(tmp,'.'); + if (!tmp) + break; + else + tmp++; + } + tmp = NULL; + for (; i>0; i--) { + tmp = malloc(strlen(ipStr + 3)); + sprintf(tmp,"%s.0",ipStr); + ipStr = tmp; + } + } + if (!inet_aton(ipStr, (struct in_addr *) &ip)) { if (!beSilent) fprintf(stderr, "ipcalc: bad ip address: %s\n", ipStr); |