1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 23 /* 24 * Copyright (c) 1996-2001 by Sun Microsystems, Inc. 25 * All rights reserved. 26 */ 27 28 #pragma ident "%Z%%M% %I% %E% SMI" 29 30 #include <stdio.h> 31 #include <stdlib.h> 32 #include <libintl.h> 33 #include <signal.h> 34 #include <errno.h> 35 #include <string.h> 36 #include <strings.h> 37 #include <syslog.h> 38 #include <unistd.h> 39 #include <sys/types.h> 40 #include <fcntl.h> 41 #include <sys/socket.h> 42 #include <netinet/in.h> 43 #include <arpa/inet.h> 44 #include <netdb.h> 45 #include "netpr.h" 46 #include "netdebug.h" 47 48 #define MAX_NLPS 60 /* Max no. loops in while */ 49 50 np_tcpjob_t * 51 create_tcp_job(np_job_t *genjob, int filesize) 52 { 53 np_tcpjob_t *tcpjob; 54 55 if (genjob == NULL) 56 return (NULL); 57 58 tcpjob = (np_tcpjob_t *)malloc(sizeof (np_tcpjob_t)); 59 ASSERT(tcpjob, MALLOC_ERR); 60 (void) memset(tcpjob, 0, sizeof (np_tcpjob_t)); 61 62 tcpjob->gen_data = genjob; 63 tcpjob->gen_data->filesize = filesize; 64 65 return (tcpjob); 66 } 67 68 int 69 tcp_open(char *dest, np_tcpjob_t *tcpjob, int timeout) 70 { 71 struct hostent *hp; 72 struct sockaddr_in6 serv_addr; 73 int s, 74 err, 75 error_num; 76 unsigned timo = 1; 77 int retry; 78 int rtnerr; 79 80 /* 81 * Get the host address and port number to connect to. 82 */ 83 if (dest == NULL) { 84 return (-1); 85 } 86 87 if ((hp = (getipnodebyname(dest, AF_INET6, AI_DEFAULT, 88 &error_num))) == NULL) { 89 (void) fprintf(stderr, 90 gettext("Netpr: System call getipnodebyname fails\n")); 91 syslog(LOG_DEBUG, "System call getipnodebyname fails " 92 "getipnodebyname() returned %d", error_num); 93 return (-1); 94 } 95 96 (void) memset(&serv_addr, 0, sizeof (struct sockaddr_in6)); 97 bcopy(hp->h_addr, (caddr_t)&serv_addr.sin6_addr, hp->h_length); 98 serv_addr.sin6_family = hp->h_addrtype; 99 serv_addr.sin6_port = (int)htons(atoi(tcpjob->np_port)); 100 101 do { 102 103 retry = 0; 104 rtnerr = 0; 105 /* 106 * Try connecting to the printer. 107 */ 108 s = socket(PF_INET6, SOCK_STREAM, 0); 109 if (s < 0) { 110 (void) fprintf(stderr, 111 gettext("Netpr: System call socket fails\n")); 112 syslog(LOG_DEBUG, "System call socket fails"); 113 rtnerr = -1; 114 } else { 115 (void) signal(SIGALRM, null_sighandler); 116 (void) alarm(timeout); 117 if (connect(s, (struct sockaddr *)&serv_addr, 118 sizeof (serv_addr)) < 0) { 119 err = errno; 120 (void) alarm(0); 121 errno = err; 122 123 if (errno == ECONNREFUSED && timo <= 16) { 124 (void) sleep(timo); 125 timo *= 2; 126 retry++; 127 } else { 128 (void) fprintf(stderr, 129 gettext("Netpr: Cannot connect to printer\n")); 130 syslog(LOG_DEBUG, "Cannot connect to printer"); 131 rtnerr = -1; 132 } 133 /* The connect on this socket failed; close it */ 134 (void) close(s); 135 } else 136 (void) alarm(0); 137 } 138 139 } while (retry); 140 141 return ((rtnerr) ? rtnerr : s); 142 } 143 144 145 int 146 tcp_print(int sockfd, caddr_t pa, np_tcpjob_t *tcpjob) 147 { 148 char c; 149 int xfer; 150 char buf[BUFSIZ + 1]; 151 int nr = 0; 152 int ctr = 0; 153 int msg_given = 0; 154 int nlps = 0; 155 156 if ((xfer = xfer_file(sockfd, pa, 157 tcpjob->gen_data->filesize, tcpjob->gen_data->timeout)) < 0) { 158 return (xfer); 159 } 160 161 if ((shutdown(sockfd, 1)) != 0) { 162 (void) fprintf(stderr, 163 gettext("Netpr: System error: possible loss of data\n")); 164 syslog(LOG_DEBUG, 165 "shutdown error; possible loss of data"); 166 return (E_SYSTEM_ERROR); 167 } 168 169 170 /* read in single character ack or msg from printer */ 171 172 (void) memset(buf, 0, BUFSIZ + 1); 173 while (ctr < BUFSIZ) { 174 (void) signal(SIGALRM, null_sighandler); 175 (void) alarm(2); 176 errno = 0; 177 nr = read(sockfd, &c, 1); 178 (void) alarm(0); 179 if (errno == EINTR) { 180 if (msg_given == 0) { 181 tell_lptell(ERRORMSG, 182 gettext("Printer not responding;" \ 183 "Either warming up or needs attention\n")); 184 msg_given++; 185 } 186 187 /* if no ACK received, do not loop forever */ 188 189 if (nlps++ >= MAX_NLPS) { 190 syslog(LOG_DEBUG, "No final ack received"); 191 break; 192 } 193 } else { 194 if ((buf[ctr++] = c) == '\n' || (nr == 0)) 195 break; 196 } 197 } 198 if (ctr > 1) 199 syslog(LOG_DEBUG, "Message from tcp printer on read: %s", 200 buf); 201 202 if (msg_given && (nlps < MAX_NLPS)) { 203 (void) fprintf(stderr, gettext("Printer ok\n")); 204 tell_lptell(OKMSG, "Current"); 205 } 206 207 return (E_SUCCESS); 208 } 209