| 1 | static char sccsid[] = "@(#)prmail.c 4.1 (Berkeley) %G%"; |
| 2 | |
| 3 | /* |
| 4 | prmail -f fromaddress [-l username] [-c] [-k] |
| 5 | |
| 6 | Print/forward mail on this machine to another machine. |
| 7 | |
| 8 | Preferred usage (Has two modes): |
| 9 | Mail check- |
| 10 | A message is printed that there is mail. |
| 11 | This is intended for people who put netmail -c addr |
| 12 | in their .login files, and don't want to |
| 13 | be prompted for their password. |
| 14 | Mail check is indicated by a -c option. |
| 15 | Mail forward- |
| 16 | The mail is "mailed" to the fetcher. |
| 17 | If the -r option is given, the mail is also |
| 18 | appended to the mbox file and then removed. |
| 19 | Forward is indicated by the lack of a -c option. |
| 20 | |
| 21 | Options: |
| 22 | -l username read username's mail |
| 23 | -f fromaddress forward mail to this address |
| 24 | -c is a mail check, don't forward mail. |
| 25 | -k print "No Mail" for all to see |
| 26 | |
| 27 | */ |
| 28 | |
| 29 | # include "defs.h" |
| 30 | |
| 31 | /* |
| 32 | mail seems to reside in one of three places: |
| 33 | 1. the user's home directory/.mail |
| 34 | 2. /usr/mail/username |
| 35 | 3. /usr/spool/mail/username |
| 36 | the conditional compilation flags for these three forms are: |
| 37 | 1. OLDMAIL |
| 38 | 2. USRMAIL |
| 39 | 3. is the default |
| 40 | */ |
| 41 | # ifdef USRMAIL |
| 42 | # define MAILDIR "/usr/mail" |
| 43 | # else |
| 44 | # define MAILDIR "/usr/spool/mail" |
| 45 | # endif |
| 46 | |
| 47 | char _sobuf[BUFSIZ]; |
| 48 | main(argc,argv) |
| 49 | char **argv; |
| 50 | { |
| 51 | long ltimeMail; |
| 52 | struct stat statbuf; |
| 53 | struct passwd *pwd; |
| 54 | FILE *f; |
| 55 | char fn[BUFSIZ],*s,username[20], |
| 56 | fromaddress[BUFSIZ],toaddress[BUFSIZ], |
| 57 | fMailCheck=0, *stimeMail,fquiet = 1; |
| 58 | int ret,pid; |
| 59 | fromaddress[0] = 0; |
| 60 | username[0] = 0; |
| 61 | setbuf(stdout,_sobuf); |
| 62 | while(argc > 1){ |
| 63 | argc--, argv++; |
| 64 | if(argv[0][0] == '-'){ |
| 65 | switch(argv[0][1]){ |
| 66 | case 'c': fMailCheck++; break; |
| 67 | case 'f': harg(fromaddress); break; |
| 68 | case 'k': fquiet = 0; break; |
| 69 | case 'l': harg(username); break; |
| 70 | /* it is important to ignore unknown flags for |
| 71 | compatibilty reasons */ |
| 72 | } |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | /* get the name of the user who's mail we're reading */ |
| 77 | if(username[0] == 0){ |
| 78 | s = SnFromUid(getuid()); |
| 79 | if(s == NULL){ |
| 80 | fprintf(stderr,"Unknown user\n"); |
| 81 | exit(EX_OSFILE); |
| 82 | } |
| 83 | strcpy(username,s); |
| 84 | } |
| 85 | |
| 86 | # ifdef OLDMAIL |
| 87 | /* handle mail directory in user's directory */ |
| 88 | /* can't do getenv because may be logging in as "network" */ |
| 89 | pwd = getpwnam(username); |
| 90 | if(pwd == NULL){ |
| 91 | fprintf(stderr,"no passwd file\n"); |
| 92 | exit(EX_OSFILE); |
| 93 | } |
| 94 | sprintf(fn,"%s/.mail",pwd->pw_dir); |
| 95 | # else |
| 96 | sprintf(fn,"%s/%s",MAILDIR,username); |
| 97 | # endif |
| 98 | sprintf(toaddress,"%s:%s", longname(local),username); |
| 99 | if(fromaddress[0] == 0){ |
| 100 | fprintf(stderr,"Need a From Address\n"); |
| 101 | exit(EX_USAGE); |
| 102 | } |
| 103 | |
| 104 | /* don't send anything back if nothing to send */ |
| 105 | if(stat(fn,&statbuf) < 0 || getsize(&statbuf) == 0L) { |
| 106 | if(!fquiet) |
| 107 | printf("No mail for %s on the %s machine.\n", |
| 108 | username,longname(local)); |
| 109 | exit(EX_OK); |
| 110 | } |
| 111 | |
| 112 | /* if a mail check, print message and exit */ |
| 113 | if(fMailCheck){ |
| 114 | ltimeMail = statbuf.st_mtime; |
| 115 | stimeMail = ctime(<imeMail); |
| 116 | stimeMail[strlen(stimeMail) - 6] = 0; |
| 117 | printf( |
| 118 | "\"%s\" has mail on the %s machine. \nLast updated on %s. \n", |
| 119 | username,longname(local),stimeMail); |
| 120 | printf("File %s:%s, Length %ld characters. \n", |
| 121 | longname(local),fn,getsize(&statbuf)); |
| 122 | exit(EX_OK); |
| 123 | } |
| 124 | |
| 125 | /* read the mail and mail it to the account asking for it */ |
| 126 | /* send mail to "fromaddress", as from "toaddress" */ |
| 127 | ret = mailmail(fn,fromaddress); |
| 128 | if(ret == 0){ |
| 129 | ret = RcAppendMail(fn,username); |
| 130 | if(ret == 0){ |
| 131 | # ifndef OLDMAIL |
| 132 | ret = unlink(fn); |
| 133 | if(ret < 0) |
| 134 | # endif |
| 135 | ret = creat(fn,0644); |
| 136 | if(ret >= 0)close(ret); |
| 137 | } |
| 138 | } |
| 139 | if(ret < 0)fprintf(stderr,"Mail not removed\n"); |
| 140 | exit(ret); |
| 141 | } |
| 142 | /* mail contents of file fn to user "toaddress" */ |
| 143 | /* read file and mail each message separately */ |
| 144 | /* returns return code of executing the mail prorgam */ |
| 145 | mailmail(fn,toaddress) |
| 146 | char *fn, *toaddress; |
| 147 | { |
| 148 | FILE *fdfile, *fdcmd; |
| 149 | FILE *mailopen(); |
| 150 | char line[BUFSIZ]; |
| 151 | int ret; |
| 152 | int more; |
| 153 | |
| 154 | fdfile = fopen(fn,"r"); |
| 155 | if(fdfile == NULL){ |
| 156 | perror(fn); |
| 157 | exit(EX_DATAERR); |
| 158 | } |
| 159 | more = 1; |
| 160 | line[0] = 0; |
| 161 | while(more){ |
| 162 | fdcmd = mailopen(toaddress,NULL,1,0); |
| 163 | if(fdcmd == NULL){ |
| 164 | perror("mail command"); |
| 165 | exit(EX_UNAVAILABLE); |
| 166 | } |
| 167 | /* read line with from on it */ |
| 168 | if(line[0] == 0)fgets(line,BUFSIZ,fdfile); |
| 169 | /* insert a > before the first from line */ |
| 170 | fprintf(fdcmd,">%s",line); |
| 171 | more = 0; |
| 172 | while(fgets(line,BUFSIZ,fdfile) != NULL){ |
| 173 | if(strncmp(line,"From ",5) == 0){ |
| 174 | more++; |
| 175 | break; |
| 176 | } |
| 177 | fputs(line,fdcmd); |
| 178 | } |
| 179 | ret = mailclose(fdcmd); |
| 180 | ret >>= 8; |
| 181 | if(ret != 0){ |
| 182 | fprintf(stderr, |
| 183 | "Non-zero return code (%d) from the mail program\n", |
| 184 | ret); |
| 185 | break; |
| 186 | } |
| 187 | } |
| 188 | fclose(fdfile); |
| 189 | return(ret); |
| 190 | } |
| 191 | |
| 192 | /* |
| 193 | RcAppendMail(fnFrom) returns a return code |
| 194 | |
| 195 | Copy mail from fnFrom to the end of the mbox file in the user's |
| 196 | home directory. |
| 197 | Returns -1 if error, 0 if ok. |
| 198 | Can't use getenv() because if there's no entry in utmp |
| 199 | for machines with multiple names per uid, the getenv() will |
| 200 | return the homedir of the first name/uid pair it finds. |
| 201 | */ |
| 202 | RcAppendMail(fnFrom,sn) |
| 203 | char *fnFrom; |
| 204 | char *sn; |
| 205 | { |
| 206 | FILE *fdFrom, *fdTo; |
| 207 | char *shdir, fnTo[BUFSIZ], sBuf[BUFSIZ]; |
| 208 | int nchar; |
| 209 | |
| 210 | # ifdef MULTNAMS |
| 211 | struct passwd *pwd; |
| 212 | |
| 213 | pwd = getpwnam(sn); |
| 214 | if(pwd == NULL)return(-1); |
| 215 | shdir = pwd->pw_dir; |
| 216 | # else |
| 217 | shdir = getenv("HOME"); |
| 218 | if(shdir == NULL)return(-1); |
| 219 | # endif |
| 220 | sprintf(fnTo,"%s/mbox",shdir); |
| 221 | fdTo = fopen(fnTo,"a"); |
| 222 | if(fdTo == NULL){ |
| 223 | perror(fnTo); |
| 224 | return(-1); |
| 225 | } |
| 226 | |
| 227 | fdFrom = fopen(fnFrom,"r"); |
| 228 | if(fdFrom == NULL){ |
| 229 | perror(fdFrom); |
| 230 | return(-1); |
| 231 | } |
| 232 | |
| 233 | while((nchar = fread(sBuf,1,BUFSIZ,fdFrom)) > 0){ |
| 234 | if(fwrite(sBuf,1,nchar,fdTo) != nchar){ |
| 235 | perror(fnTo); |
| 236 | return(-1); |
| 237 | } |
| 238 | } |
| 239 | fclose(fdFrom); |
| 240 | fclose(fdTo); |
| 241 | return(0); |
| 242 | } |