| 1 | /* |
| 2 | ** Copyright 1998 - 2009 Double Precision, Inc. |
| 3 | ** See COPYING for distribution information. |
| 4 | */ |
| 5 | |
| 6 | /* |
| 7 | */ |
| 8 | #include "rfc822.h" |
| 9 | #include <stdlib.h> |
| 10 | |
| 11 | static void cntlen(char c, void *p) |
| 12 | { |
| 13 | c=c; |
| 14 | ++ *(size_t *)p; |
| 15 | } |
| 16 | |
| 17 | static void cntlensep(const char *p, void *ptr) |
| 18 | { |
| 19 | while (*p) cntlen(*p++, ptr); |
| 20 | } |
| 21 | |
| 22 | static void saveaddr(char c, void *ptr) |
| 23 | { |
| 24 | *(*(char **)ptr)++=c; |
| 25 | } |
| 26 | |
| 27 | static void saveaddrsep(const char *p, void *ptr) |
| 28 | { |
| 29 | while (*p) saveaddr(*p++, ptr); |
| 30 | } |
| 31 | |
| 32 | char *rfc822_getaddrs(const struct rfc822a *rfc) |
| 33 | { |
| 34 | size_t addrbuflen=0; |
| 35 | char *addrbuf, *ptr; |
| 36 | |
| 37 | if (rfc822_print(rfc, &cntlen, &cntlensep, &addrbuflen) < 0) |
| 38 | return NULL; |
| 39 | |
| 40 | if (!(addrbuf=malloc(addrbuflen+1))) |
| 41 | return (0); |
| 42 | |
| 43 | ptr=addrbuf; |
| 44 | if (rfc822_print(rfc, &saveaddr, &saveaddrsep, &ptr) < 0) |
| 45 | { |
| 46 | free(addrbuf); |
| 47 | return NULL; |
| 48 | } |
| 49 | |
| 50 | addrbuf[addrbuflen]=0; |
| 51 | return (addrbuf); |
| 52 | } |
| 53 | |
| 54 | static void saveaddrsep_wrap(const char *p, void *ptr) |
| 55 | { |
| 56 | int c; |
| 57 | |
| 58 | while ((c=*p++) != 0) |
| 59 | { |
| 60 | if (c == ' ') c='\n'; |
| 61 | saveaddr(c, ptr); |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | char *rfc822_getaddrs_wrap(const struct rfc822a *rfc, int w) |
| 66 | { |
| 67 | size_t addrbuflen=0; |
| 68 | char *addrbuf, *ptr, *start, *lastnl; |
| 69 | |
| 70 | if (rfc822_print(rfc, &cntlen, &cntlensep, &addrbuflen) < 0) |
| 71 | return NULL; |
| 72 | |
| 73 | if (!(addrbuf=malloc(addrbuflen+1))) |
| 74 | return (0); |
| 75 | |
| 76 | ptr=addrbuf; |
| 77 | |
| 78 | if (rfc822_print(rfc, &saveaddr, &saveaddrsep_wrap, &ptr) < 0) |
| 79 | { |
| 80 | free(addrbuf); |
| 81 | return NULL; |
| 82 | } |
| 83 | |
| 84 | addrbuf[addrbuflen]=0; |
| 85 | |
| 86 | for (lastnl=0, start=ptr=addrbuf; *ptr; ) |
| 87 | { |
| 88 | while (*ptr && *ptr != '\n') ptr++; |
| 89 | if (ptr-start < w) |
| 90 | { |
| 91 | if (lastnl) *lastnl=' '; |
| 92 | lastnl=ptr; |
| 93 | if (*ptr) ++ptr; |
| 94 | } |
| 95 | else |
| 96 | { |
| 97 | if (lastnl) |
| 98 | start=lastnl+1; |
| 99 | else |
| 100 | { |
| 101 | start=ptr+1; |
| 102 | if (*ptr) ++ptr; |
| 103 | } |
| 104 | lastnl=0; |
| 105 | } |
| 106 | } |
| 107 | return (addrbuf); |
| 108 | } |