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Size optimization for rdate from Vladimir
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parent
8269396491
commit
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56
rdate.c
56
rdate.c
@ -33,16 +33,11 @@
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#include <stdlib.h>
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#include <unistd.h>
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#include "busybox.h"
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#define BB_DECLARE_EXTERN
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#include "messages.c"
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static const int RFC_868_BIAS = 2208988800UL;
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static int setdate= 0;
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static int printdate= 0;
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static time_t askremotedate(char *host)
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static time_t askremotedate(const char *host)
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{
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struct hostent *h;
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struct sockaddr_in sin;
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@ -50,32 +45,25 @@ static time_t askremotedate(char *host)
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unsigned long int nett, localt;
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int fd;
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if (!(h = gethostbyname(host))) { /* get the IP addr */
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perror_msg("%s", host);
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return(-1);
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}
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if ((tserv = getservbyname("time", "tcp")) == NULL) { /* find port # */
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perror_msg("%s", "time");
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return(-1);
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}
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if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) { /* get net connection */
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perror_msg("%s", "socket");
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return(-1);
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}
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if (!(h = gethostbyname(host))) /* get the IP addr */
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perror_msg_and_die("%s", host);
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if ((tserv = getservbyname("time", "tcp")) == NULL) /* find port # */
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perror_msg_and_die("%s", "time");
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if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) /* get net connection */
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perror_msg_and_die("%s", "socket");
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memcpy(&sin.sin_addr, h->h_addr, sizeof(sin.sin_addr));
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sin.sin_port= tserv->s_port;
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sin.sin_family = AF_INET;
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if (connect(fd, (struct sockaddr *)&sin, sizeof(sin)) < 0) { /* connect to time server */
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perror_msg("%s", host);
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close(fd);
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return(-1);
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}
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if (read(fd, (void *)&nett, 4) != 4) { /* read time from server */
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close(fd);
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error_msg("%s did not send the complete time", host);
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}
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if (connect(fd, (struct sockaddr *)&sin, sizeof(sin)) < 0) /* connect to time server */
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perror_msg_and_die("%s", host);
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if (read(fd, (void *)&nett, 4) != 4) /* read time from server */
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error_msg_and_die("%s did not send the complete time", host);
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close(fd);
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/* convert from network byte order to local byte order.
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@ -93,6 +81,8 @@ int rdate_main(int argc, char **argv)
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{
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time_t time;
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int opt;
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int setdate = 0;
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int printdate= 0;
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/* Interpret command line args */
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/* do special-case option parsing */
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@ -118,20 +108,18 @@ int rdate_main(int argc, char **argv)
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/* the default action is to set the date */
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if (printdate==0 && setdate==0) setdate++;
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if (optind == argc) {
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if (optind == argc)
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show_usage();
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}
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if ((time= askremotedate(argv[optind])) == (time_t)-1) {
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return EXIT_FAILURE;
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}
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time = askremotedate(argv[optind]);
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if (setdate) {
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if (stime(&time) < 0)
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perror_msg_and_die("Could not set time of day");
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}
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if (printdate) {
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if (printdate)
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printf("%s", ctime(&time));
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}
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return EXIT_SUCCESS;
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}
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@ -33,16 +33,11 @@
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#include <stdlib.h>
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#include <unistd.h>
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#include "busybox.h"
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#define BB_DECLARE_EXTERN
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#include "messages.c"
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static const int RFC_868_BIAS = 2208988800UL;
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static int setdate= 0;
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static int printdate= 0;
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static time_t askremotedate(char *host)
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static time_t askremotedate(const char *host)
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{
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struct hostent *h;
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struct sockaddr_in sin;
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@ -50,32 +45,25 @@ static time_t askremotedate(char *host)
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unsigned long int nett, localt;
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int fd;
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if (!(h = gethostbyname(host))) { /* get the IP addr */
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perror_msg("%s", host);
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return(-1);
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}
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if ((tserv = getservbyname("time", "tcp")) == NULL) { /* find port # */
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perror_msg("%s", "time");
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return(-1);
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}
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if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) { /* get net connection */
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perror_msg("%s", "socket");
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return(-1);
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}
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if (!(h = gethostbyname(host))) /* get the IP addr */
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perror_msg_and_die("%s", host);
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if ((tserv = getservbyname("time", "tcp")) == NULL) /* find port # */
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perror_msg_and_die("%s", "time");
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if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) /* get net connection */
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perror_msg_and_die("%s", "socket");
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memcpy(&sin.sin_addr, h->h_addr, sizeof(sin.sin_addr));
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sin.sin_port= tserv->s_port;
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sin.sin_family = AF_INET;
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if (connect(fd, (struct sockaddr *)&sin, sizeof(sin)) < 0) { /* connect to time server */
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perror_msg("%s", host);
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close(fd);
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return(-1);
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}
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if (read(fd, (void *)&nett, 4) != 4) { /* read time from server */
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close(fd);
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error_msg("%s did not send the complete time", host);
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}
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if (connect(fd, (struct sockaddr *)&sin, sizeof(sin)) < 0) /* connect to time server */
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perror_msg_and_die("%s", host);
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if (read(fd, (void *)&nett, 4) != 4) /* read time from server */
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error_msg_and_die("%s did not send the complete time", host);
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close(fd);
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/* convert from network byte order to local byte order.
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@ -93,6 +81,8 @@ int rdate_main(int argc, char **argv)
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{
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time_t time;
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int opt;
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int setdate = 0;
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int printdate= 0;
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/* Interpret command line args */
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/* do special-case option parsing */
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@ -118,20 +108,18 @@ int rdate_main(int argc, char **argv)
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/* the default action is to set the date */
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if (printdate==0 && setdate==0) setdate++;
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if (optind == argc) {
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if (optind == argc)
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show_usage();
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}
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if ((time= askremotedate(argv[optind])) == (time_t)-1) {
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return EXIT_FAILURE;
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}
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time = askremotedate(argv[optind]);
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if (setdate) {
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if (stime(&time) < 0)
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perror_msg_and_die("Could not set time of day");
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}
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if (printdate) {
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if (printdate)
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printf("%s", ctime(&time));
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}
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return EXIT_SUCCESS;
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}
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