Apply Glenn's tftp rewrite
This commit is contained in:
Eric Andersen
parent
bac490fe53
commit
76fa8ea790
@ -47,37 +47,6 @@
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//#define BB_FEATURE_TFTP_DEBUG
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/* we don't need #ifdefs with these constants and optimization... */
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#ifdef BB_FEATURE_TFTP_GET
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#define BB_TFTP_GET (1 << 0)
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#else
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#define BB_TFTP_GET 0
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#endif
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#ifdef BB_FEATURE_TFTP_PUT
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#define BB_TFTP_PUT (1 << 1)
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#else
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#define BB_TFTP_PUT 0
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#endif
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#ifdef BB_FEATURE_TFTP_DEBUG
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#define BB_TFTP_DEBUG 1
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#else
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#define BB_TFTP_DEBUG 0
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#endif
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#define BB_TFTP_NO_RETRIES 5
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#define BB_TFTP_TIMEOUT 5 /* seconds */
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#define RRQ 1 /* read request */
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#define WRQ 2 /* write request */
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#define DATA 3 /* data packet */
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#define ACK 4 /* acknowledgement */
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#define ERROR 5 /* error code */
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#define BUFSIZE (512+4)
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static const char *tftp_error_msg[] = {
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"Undefined error",
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"File not found",
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@ -89,24 +58,32 @@ static const char *tftp_error_msg[] = {
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"No such user"
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};
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static inline int tftp(int cmd, struct hostent *host,
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char *serverfile, int localfd, int port)
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const int tftp_cmd_get = 1;
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const int tftp_cmd_put = 2;
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static inline int tftp(const int cmd, const struct hostent *host,
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const char *serverfile, int localfd, const int port, int tftp_bufsize)
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{
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const int cmd_get = cmd & tftp_cmd_get;
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const int cmd_put = cmd & tftp_cmd_put;
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const int bb_tftp_num_retries = 5;
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struct sockaddr_in sa;
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int socketfd;
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struct timeval tv;
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fd_set rfds;
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struct sockaddr_in from;
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struct timeval tv;
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socklen_t fromlen;
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fd_set rfds;
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char *cp;
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unsigned short tmp;
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int len, opcode, finished;
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int timeout, block_nr;
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int socketfd;
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int len;
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int opcode = 0;
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int finished = 0;
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int timeout = bb_tftp_num_retries;
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int block_nr = 1;
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RESERVE_BB_BUFFER(buf, tftp_bufsize + 4); // Why 4 ?
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RESERVE_BB_BUFFER(buf, BUFSIZE);
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opcode = finished = timeout = 0;
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block_nr = 1;
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tftp_bufsize += 4;
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if ((socketfd = socket(PF_INET, SOCK_DGRAM, 0)) < 0) {
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perror_msg("socket");
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@ -125,12 +102,12 @@ static inline int tftp(int cmd, struct hostent *host,
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/* build opcode */
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if (cmd & BB_TFTP_GET) {
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opcode = RRQ;
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if (cmd_get) {
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opcode = 1; // read request = 1
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}
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if (cmd & BB_TFTP_PUT) {
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opcode = WRQ;
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if (cmd_put) {
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opcode = 2; // write request = 2
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}
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while (1) {
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@ -147,16 +124,17 @@ static inline int tftp(int cmd, struct hostent *host,
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/* add filename and mode */
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if ((BB_TFTP_GET && (opcode == RRQ)) ||
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(BB_TFTP_PUT && (opcode == WRQ))) {
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if ((cmd_get && (opcode == 1)) || // read request = 1
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(cmd_put && (opcode == 2))) { // write request = 2
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while (cp != &buf[BUFSIZE - 1]) {
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/* what is this trying to do ? */
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while (cp != &buf[tftp_bufsize - 1]) {
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if ((*cp = *serverfile++) == '\0')
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break;
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cp++;
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}
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if ((*cp != '\0') || (&buf[BUFSIZE - 1] - cp) < 7) {
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/* and this ? */
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if ((*cp != '\0') || (&buf[tftp_bufsize - 1] - cp) < 7) {
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error_msg("too long server-filename");
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break;
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}
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@ -167,8 +145,8 @@ static inline int tftp(int cmd, struct hostent *host,
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/* add ack and data */
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if ((BB_TFTP_GET && (opcode == ACK)) ||
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(BB_TFTP_PUT && (opcode == DATA))) {
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if ((cmd_get && (opcode == 4)) || // acknowledgement = 4
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(cmd_put && (opcode == 3))) { // data packet == 3
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*((unsigned short *) cp) = htons(block_nr);
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@ -176,15 +154,15 @@ static inline int tftp(int cmd, struct hostent *host,
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block_nr++;
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if (BB_TFTP_PUT && (opcode == DATA)) {
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len = read(localfd, cp, BUFSIZE - 4);
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if (cmd_put && (opcode == 3)) { // data packet == 3
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len = read(localfd, cp, tftp_bufsize - 4);
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if (len < 0) {
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perror_msg("read");
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break;
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}
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if (len != (BUFSIZE - 4)) {
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if (len != (tftp_bufsize - 4)) {
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finished++;
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}
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@ -202,16 +180,14 @@ static inline int tftp(int cmd, struct hostent *host,
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len = cp - buf;
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if (BB_TFTP_DEBUG) {
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printf("sending %u bytes\n", len);
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for (cp = buf; cp < &buf[len]; cp++)
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printf("%02x ", *cp);
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printf("\n");
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}
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#ifdef BB_FEATURE_TFTP_DEBUG
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printf("sending %u bytes\n", len);
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for (cp = buf; cp < &buf[len]; cp++)
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printf("%02x ", *cp);
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printf("\n");
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#endif
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if (sendto(socketfd, buf, len, 0,
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(struct sockaddr *) &sa, sizeof(sa)) < 0) {
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(struct sockaddr *) &sa, sizeof(sa)) < 0) {
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perror_msg("send");
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len = -1;
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break;
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@ -224,7 +200,7 @@ static inline int tftp(int cmd, struct hostent *host,
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memset(&from, 0, sizeof(from));
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fromlen = sizeof(from);
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tv.tv_sec = BB_TFTP_TIMEOUT;
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tv.tv_sec = 5; // BB_TFPT_TIMEOUT = 5
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tv.tv_usec = 0;
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FD_ZERO(&rfds);
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@ -232,9 +208,8 @@ static inline int tftp(int cmd, struct hostent *host,
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switch (select(FD_SETSIZE, &rfds, NULL, NULL, &tv)) {
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case 1:
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len = recvfrom(socketfd, buf,
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BUFSIZE, 0,
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(struct sockaddr *) &from, &fromlen);
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len = recvfrom(socketfd, buf, tftp_bufsize, 0,
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(struct sockaddr *) &from, &fromlen);
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if (len < 0) {
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perror_msg("recvfrom");
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@ -245,28 +220,23 @@ static inline int tftp(int cmd, struct hostent *host,
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if (sa.sin_port == htons(port)) {
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sa.sin_port = from.sin_port;
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break;
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}
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if (sa.sin_port == from.sin_port) {
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break;
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}
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/* fall-through for bad packets! */
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/* discard the packet - treat as timeout */
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timeout = bb_tftp_num_retries;
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case 0:
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error_msg("timeout");
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if (!timeout) {
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timeout = BB_TFTP_NO_RETRIES;
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} else {
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timeout--;
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}
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if (!timeout) {
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if (timeout == 0) {
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len = -1;
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error_msg("last timeout");
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} else {
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timeout--;
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}
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break;
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@ -287,11 +257,11 @@ static inline int tftp(int cmd, struct hostent *host,
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opcode = ntohs(*((unsigned short *) buf));
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tmp = ntohs(*((unsigned short *) &buf[2]));
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if (BB_TFTP_DEBUG) {
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printf("received %d bytes: %04x %04x\n", len, opcode, tmp);
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}
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#ifdef BB_FEATURE_TFTP_DEBUG
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printf("received %d bytes: %04x %04x\n", len, opcode, tmp);
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#endif
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if (BB_TFTP_GET && (opcode == DATA)) {
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if (cmd_get && (opcode == 3)) { // data packet == 3
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if (tmp == block_nr) {
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len = write(localfd, &buf[4], len - 4);
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@ -301,33 +271,33 @@ static inline int tftp(int cmd, struct hostent *host,
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break;
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}
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if (len != (BUFSIZE - 4)) {
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if (len != (tftp_bufsize - 4)) {
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finished++;
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}
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opcode = ACK;
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opcode = 4; // acknowledgement = 4
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continue;
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}
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}
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if (BB_TFTP_PUT && (opcode == ACK)) {
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if (cmd_put && (opcode == 4)) { // acknowledgement = 4
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if (tmp == (block_nr - 1)) {
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if (finished) {
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break;
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}
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opcode = DATA;
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opcode = 3; // data packet == 3
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continue;
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}
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}
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if (opcode == ERROR) {
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if (opcode == 5) { // error code == 5
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char *msg = NULL;
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if (buf[4] != '\0') {
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msg = &buf[4];
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buf[BUFSIZE - 1] = '\0';
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buf[tftp_bufsize - 1] = '\0';
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} else if (tmp < (sizeof(tftp_error_msg) / sizeof(char *))) {
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msg = (char *) tftp_error_msg[tmp];
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}
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@ -347,68 +317,67 @@ static inline int tftp(int cmd, struct hostent *host,
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int tftp_main(int argc, char **argv)
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{
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char *cp, *s;
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char *serverstr;
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struct hostent *host;
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char *serverfile;
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char *localfile;
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int cmd, flags, fd, bad;
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struct hostent *host = NULL;
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char *localfile = NULL;
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char *remotefile = NULL;
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int port = 69;
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int cmd = 0;
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int fd = -1;
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int flags = 0;
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int opt;
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int result;
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int blocksize = 512;
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host = (void *) serverstr = serverfile = localfile = NULL;
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flags = cmd = 0;
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bad = 1;
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if (argc > 3) {
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if (BB_TFTP_GET && (strcmp(argv[1], "get") == 0)) {
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cmd = BB_TFTP_GET;
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while ((opt = getopt(argc, argv, "b:gpl:r:")) != -1) {
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switch (opt) {
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case 'b':
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blocksize = atoi(optarg);
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break;
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#ifdef BB_FEATURE_TFTP_GET
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case 'g':
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cmd = tftp_cmd_get;
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flags = O_WRONLY | O_CREAT;
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serverstr = argv[2];
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localfile = argv[3];
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}
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if (BB_TFTP_PUT && (strcmp(argv[1], "put") == 0)) {
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cmd = BB_TFTP_PUT;
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break;
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#endif
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#ifdef BB_FEATURE_TFTP_PUT
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case 'p':
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cmd = tftp_cmd_put;
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flags = O_RDONLY;
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localfile = argv[2];
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serverstr = argv[3];
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break;
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#endif
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case 'l':
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localfile = xstrdup(optarg);
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break;
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case 'r':
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remotefile = xstrdup(optarg);
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break;
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}
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}
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if (!(cmd & (BB_TFTP_GET | BB_TFTP_PUT))) {
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if ((cmd == 0) || (optind == argc)) {
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show_usage();
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}
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for (cp = serverstr; *cp != '\0'; cp++)
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if (*cp == ':')
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break;
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if (*cp == ':') {
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serverfile = cp + 1;
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s = xstrdup(serverstr);
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s[cp - serverstr] = '\0';
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host = xgethostbyname(s);
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free(s);
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}
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if (BB_TFTP_DEBUG) {
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printf("using server \"%s\", serverfile \"%s\","
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"localfile \"%s\".\n",
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inet_ntoa(*((struct in_addr *) host->h_addr)),
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serverfile, localfile);
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}
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if ((fd = open(localfile, flags, 0644)) < 0) {
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fd = open(localfile, flags, 0644);
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if (fd < 0) {
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perror_msg_and_die("local file");
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}
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flags = tftp(cmd, host, serverfile, fd, 69);
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host = xgethostbyname(argv[optind]);
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if (optind + 2 == argc) {
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port = atoi(argv[optind + 1]);
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}
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#ifdef BB_FEATURE_TFTP_DEBUG
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printf("using server \"%s\", serverfile \"%s\","
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"localfile \"%s\".\n",
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inet_ntoa(*((struct in_addr *) host->h_addr)),
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remotefile, localfile);
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#endif
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result = tftp(cmd, host, remotefile, fd, port, blocksize);
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close(fd);
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return flags;
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}
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return(result);
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}
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245
tftp.c
245
tftp.c
@ -47,37 +47,6 @@
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//#define BB_FEATURE_TFTP_DEBUG
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/* we don't need #ifdefs with these constants and optimization... */
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#ifdef BB_FEATURE_TFTP_GET
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#define BB_TFTP_GET (1 << 0)
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#else
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#define BB_TFTP_GET 0
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#endif
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#ifdef BB_FEATURE_TFTP_PUT
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#define BB_TFTP_PUT (1 << 1)
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#else
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#define BB_TFTP_PUT 0
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#endif
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#ifdef BB_FEATURE_TFTP_DEBUG
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#define BB_TFTP_DEBUG 1
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#else
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#define BB_TFTP_DEBUG 0
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#endif
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#define BB_TFTP_NO_RETRIES 5
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#define BB_TFTP_TIMEOUT 5 /* seconds */
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#define RRQ 1 /* read request */
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#define WRQ 2 /* write request */
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#define DATA 3 /* data packet */
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#define ACK 4 /* acknowledgement */
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#define ERROR 5 /* error code */
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#define BUFSIZE (512+4)
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static const char *tftp_error_msg[] = {
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"Undefined error",
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"File not found",
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@ -89,24 +58,32 @@ static const char *tftp_error_msg[] = {
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"No such user"
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};
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static inline int tftp(int cmd, struct hostent *host,
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char *serverfile, int localfd, int port)
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const int tftp_cmd_get = 1;
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const int tftp_cmd_put = 2;
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static inline int tftp(const int cmd, const struct hostent *host,
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const char *serverfile, int localfd, const int port, int tftp_bufsize)
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{
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const int cmd_get = cmd & tftp_cmd_get;
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const int cmd_put = cmd & tftp_cmd_put;
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const int bb_tftp_num_retries = 5;
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struct sockaddr_in sa;
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int socketfd;
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struct timeval tv;
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fd_set rfds;
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struct sockaddr_in from;
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struct timeval tv;
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socklen_t fromlen;
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fd_set rfds;
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char *cp;
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unsigned short tmp;
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int len, opcode, finished;
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int timeout, block_nr;
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int socketfd;
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int len;
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int opcode = 0;
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int finished = 0;
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int timeout = bb_tftp_num_retries;
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int block_nr = 1;
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RESERVE_BB_BUFFER(buf, tftp_bufsize + 4); // Why 4 ?
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RESERVE_BB_BUFFER(buf, BUFSIZE);
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opcode = finished = timeout = 0;
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block_nr = 1;
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tftp_bufsize += 4;
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if ((socketfd = socket(PF_INET, SOCK_DGRAM, 0)) < 0) {
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perror_msg("socket");
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@ -125,12 +102,12 @@ static inline int tftp(int cmd, struct hostent *host,
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/* build opcode */
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if (cmd & BB_TFTP_GET) {
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opcode = RRQ;
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if (cmd_get) {
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opcode = 1; // read request = 1
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}
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if (cmd & BB_TFTP_PUT) {
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opcode = WRQ;
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if (cmd_put) {
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opcode = 2; // write request = 2
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}
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while (1) {
|
||||
@ -147,16 +124,17 @@ static inline int tftp(int cmd, struct hostent *host,
|
||||
|
||||
/* add filename and mode */
|
||||
|
||||
if ((BB_TFTP_GET && (opcode == RRQ)) ||
|
||||
(BB_TFTP_PUT && (opcode == WRQ))) {
|
||||
if ((cmd_get && (opcode == 1)) || // read request = 1
|
||||
(cmd_put && (opcode == 2))) { // write request = 2
|
||||
|
||||
while (cp != &buf[BUFSIZE - 1]) {
|
||||
/* what is this trying to do ? */
|
||||
while (cp != &buf[tftp_bufsize - 1]) {
|
||||
if ((*cp = *serverfile++) == '\0')
|
||||
break;
|
||||
cp++;
|
||||
}
|
||||
|
||||
if ((*cp != '\0') || (&buf[BUFSIZE - 1] - cp) < 7) {
|
||||
/* and this ? */
|
||||
if ((*cp != '\0') || (&buf[tftp_bufsize - 1] - cp) < 7) {
|
||||
error_msg("too long server-filename");
|
||||
break;
|
||||
}
|
||||
@ -167,8 +145,8 @@ static inline int tftp(int cmd, struct hostent *host,
|
||||
|
||||
/* add ack and data */
|
||||
|
||||
if ((BB_TFTP_GET && (opcode == ACK)) ||
|
||||
(BB_TFTP_PUT && (opcode == DATA))) {
|
||||
if ((cmd_get && (opcode == 4)) || // acknowledgement = 4
|
||||
(cmd_put && (opcode == 3))) { // data packet == 3
|
||||
|
||||
*((unsigned short *) cp) = htons(block_nr);
|
||||
|
||||
@ -176,15 +154,15 @@ static inline int tftp(int cmd, struct hostent *host,
|
||||
|
||||
block_nr++;
|
||||
|
||||
if (BB_TFTP_PUT && (opcode == DATA)) {
|
||||
len = read(localfd, cp, BUFSIZE - 4);
|
||||
if (cmd_put && (opcode == 3)) { // data packet == 3
|
||||
len = read(localfd, cp, tftp_bufsize - 4);
|
||||
|
||||
if (len < 0) {
|
||||
perror_msg("read");
|
||||
break;
|
||||
}
|
||||
|
||||
if (len != (BUFSIZE - 4)) {
|
||||
if (len != (tftp_bufsize - 4)) {
|
||||
finished++;
|
||||
}
|
||||
|
||||
@ -202,16 +180,14 @@ static inline int tftp(int cmd, struct hostent *host,
|
||||
|
||||
len = cp - buf;
|
||||
|
||||
if (BB_TFTP_DEBUG) {
|
||||
printf("sending %u bytes\n", len);
|
||||
|
||||
for (cp = buf; cp < &buf[len]; cp++)
|
||||
printf("%02x ", *cp);
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
#ifdef BB_FEATURE_TFTP_DEBUG
|
||||
printf("sending %u bytes\n", len);
|
||||
for (cp = buf; cp < &buf[len]; cp++)
|
||||
printf("%02x ", *cp);
|
||||
printf("\n");
|
||||
#endif
|
||||
if (sendto(socketfd, buf, len, 0,
|
||||
(struct sockaddr *) &sa, sizeof(sa)) < 0) {
|
||||
(struct sockaddr *) &sa, sizeof(sa)) < 0) {
|
||||
perror_msg("send");
|
||||
len = -1;
|
||||
break;
|
||||
@ -224,7 +200,7 @@ static inline int tftp(int cmd, struct hostent *host,
|
||||
memset(&from, 0, sizeof(from));
|
||||
fromlen = sizeof(from);
|
||||
|
||||
tv.tv_sec = BB_TFTP_TIMEOUT;
|
||||
tv.tv_sec = 5; // BB_TFPT_TIMEOUT = 5
|
||||
tv.tv_usec = 0;
|
||||
|
||||
FD_ZERO(&rfds);
|
||||
@ -232,9 +208,8 @@ static inline int tftp(int cmd, struct hostent *host,
|
||||
|
||||
switch (select(FD_SETSIZE, &rfds, NULL, NULL, &tv)) {
|
||||
case 1:
|
||||
len = recvfrom(socketfd, buf,
|
||||
BUFSIZE, 0,
|
||||
(struct sockaddr *) &from, &fromlen);
|
||||
len = recvfrom(socketfd, buf, tftp_bufsize, 0,
|
||||
(struct sockaddr *) &from, &fromlen);
|
||||
|
||||
if (len < 0) {
|
||||
perror_msg("recvfrom");
|
||||
@ -245,28 +220,23 @@ static inline int tftp(int cmd, struct hostent *host,
|
||||
|
||||
if (sa.sin_port == htons(port)) {
|
||||
sa.sin_port = from.sin_port;
|
||||
break;
|
||||
}
|
||||
|
||||
if (sa.sin_port == from.sin_port) {
|
||||
break;
|
||||
}
|
||||
|
||||
/* fall-through for bad packets! */
|
||||
/* discard the packet - treat as timeout */
|
||||
timeout = bb_tftp_num_retries;
|
||||
|
||||
case 0:
|
||||
error_msg("timeout");
|
||||
|
||||
if (!timeout) {
|
||||
timeout = BB_TFTP_NO_RETRIES;
|
||||
} else {
|
||||
timeout--;
|
||||
}
|
||||
|
||||
if (!timeout) {
|
||||
if (timeout == 0) {
|
||||
len = -1;
|
||||
error_msg("last timeout");
|
||||
} else {
|
||||
timeout--;
|
||||
}
|
||||
break;
|
||||
|
||||
@ -287,11 +257,11 @@ static inline int tftp(int cmd, struct hostent *host,
|
||||
opcode = ntohs(*((unsigned short *) buf));
|
||||
tmp = ntohs(*((unsigned short *) &buf[2]));
|
||||
|
||||
if (BB_TFTP_DEBUG) {
|
||||
printf("received %d bytes: %04x %04x\n", len, opcode, tmp);
|
||||
}
|
||||
#ifdef BB_FEATURE_TFTP_DEBUG
|
||||
printf("received %d bytes: %04x %04x\n", len, opcode, tmp);
|
||||
#endif
|
||||
|
||||
if (BB_TFTP_GET && (opcode == DATA)) {
|
||||
if (cmd_get && (opcode == 3)) { // data packet == 3
|
||||
|
||||
if (tmp == block_nr) {
|
||||
len = write(localfd, &buf[4], len - 4);
|
||||
@ -301,33 +271,33 @@ static inline int tftp(int cmd, struct hostent *host,
|
||||
break;
|
||||
}
|
||||
|
||||
if (len != (BUFSIZE - 4)) {
|
||||
if (len != (tftp_bufsize - 4)) {
|
||||
finished++;
|
||||
}
|
||||
|
||||
opcode = ACK;
|
||||
opcode = 4; // acknowledgement = 4
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
if (BB_TFTP_PUT && (opcode == ACK)) {
|
||||
if (cmd_put && (opcode == 4)) { // acknowledgement = 4
|
||||
|
||||
if (tmp == (block_nr - 1)) {
|
||||
if (finished) {
|
||||
break;
|
||||
}
|
||||
|
||||
opcode = DATA;
|
||||
opcode = 3; // data packet == 3
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
if (opcode == ERROR) {
|
||||
if (opcode == 5) { // error code == 5
|
||||
char *msg = NULL;
|
||||
|
||||
if (buf[4] != '\0') {
|
||||
msg = &buf[4];
|
||||
buf[BUFSIZE - 1] = '\0';
|
||||
buf[tftp_bufsize - 1] = '\0';
|
||||
} else if (tmp < (sizeof(tftp_error_msg) / sizeof(char *))) {
|
||||
msg = (char *) tftp_error_msg[tmp];
|
||||
}
|
||||
@ -347,68 +317,67 @@ static inline int tftp(int cmd, struct hostent *host,
|
||||
|
||||
int tftp_main(int argc, char **argv)
|
||||
{
|
||||
char *cp, *s;
|
||||
char *serverstr;
|
||||
struct hostent *host;
|
||||
char *serverfile;
|
||||
char *localfile;
|
||||
int cmd, flags, fd, bad;
|
||||
struct hostent *host = NULL;
|
||||
char *localfile = NULL;
|
||||
char *remotefile = NULL;
|
||||
int port = 69;
|
||||
int cmd = 0;
|
||||
int fd = -1;
|
||||
int flags = 0;
|
||||
int opt;
|
||||
int result;
|
||||
int blocksize = 512;
|
||||
|
||||
host = (void *) serverstr = serverfile = localfile = NULL;
|
||||
flags = cmd = 0;
|
||||
bad = 1;
|
||||
|
||||
if (argc > 3) {
|
||||
if (BB_TFTP_GET && (strcmp(argv[1], "get") == 0)) {
|
||||
cmd = BB_TFTP_GET;
|
||||
while ((opt = getopt(argc, argv, "b:gpl:r:")) != -1) {
|
||||
switch (opt) {
|
||||
case 'b':
|
||||
blocksize = atoi(optarg);
|
||||
break;
|
||||
#ifdef BB_FEATURE_TFTP_GET
|
||||
case 'g':
|
||||
cmd = tftp_cmd_get;
|
||||
flags = O_WRONLY | O_CREAT;
|
||||
serverstr = argv[2];
|
||||
localfile = argv[3];
|
||||
}
|
||||
|
||||
if (BB_TFTP_PUT && (strcmp(argv[1], "put") == 0)) {
|
||||
cmd = BB_TFTP_PUT;
|
||||
break;
|
||||
#endif
|
||||
#ifdef BB_FEATURE_TFTP_PUT
|
||||
case 'p':
|
||||
cmd = tftp_cmd_put;
|
||||
flags = O_RDONLY;
|
||||
localfile = argv[2];
|
||||
serverstr = argv[3];
|
||||
break;
|
||||
#endif
|
||||
case 'l':
|
||||
localfile = xstrdup(optarg);
|
||||
break;
|
||||
case 'r':
|
||||
remotefile = xstrdup(optarg);
|
||||
break;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
if (!(cmd & (BB_TFTP_GET | BB_TFTP_PUT))) {
|
||||
if ((cmd == 0) || (optind == argc)) {
|
||||
show_usage();
|
||||
}
|
||||
|
||||
for (cp = serverstr; *cp != '\0'; cp++)
|
||||
if (*cp == ':')
|
||||
break;
|
||||
|
||||
if (*cp == ':') {
|
||||
|
||||
serverfile = cp + 1;
|
||||
|
||||
s = xstrdup(serverstr);
|
||||
s[cp - serverstr] = '\0';
|
||||
|
||||
host = xgethostbyname(s);
|
||||
|
||||
free(s);
|
||||
}
|
||||
|
||||
if (BB_TFTP_DEBUG) {
|
||||
printf("using server \"%s\", serverfile \"%s\","
|
||||
"localfile \"%s\".\n",
|
||||
inet_ntoa(*((struct in_addr *) host->h_addr)),
|
||||
serverfile, localfile);
|
||||
}
|
||||
|
||||
if ((fd = open(localfile, flags, 0644)) < 0) {
|
||||
fd = open(localfile, flags, 0644);
|
||||
if (fd < 0) {
|
||||
perror_msg_and_die("local file");
|
||||
}
|
||||
|
||||
flags = tftp(cmd, host, serverfile, fd, 69);
|
||||
host = xgethostbyname(argv[optind]);
|
||||
|
||||
if (optind + 2 == argc) {
|
||||
port = atoi(argv[optind + 1]);
|
||||
}
|
||||
|
||||
#ifdef BB_FEATURE_TFTP_DEBUG
|
||||
printf("using server \"%s\", serverfile \"%s\","
|
||||
"localfile \"%s\".\n",
|
||||
inet_ntoa(*((struct in_addr *) host->h_addr)),
|
||||
remotefile, localfile);
|
||||
#endif
|
||||
|
||||
result = tftp(cmd, host, remotefile, fd, port, blocksize);
|
||||
close(fd);
|
||||
|
||||
return flags;
|
||||
}
|
||||
return(result);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user