diff options
Diffstat (limited to 'src/global/fold_addr.c')
| -rw-r--r-- | src/global/fold_addr.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/src/global/fold_addr.c b/src/global/fold_addr.c new file mode 100644 index 0000000..86ee7b5 --- /dev/null +++ b/src/global/fold_addr.c @@ -0,0 +1,172 @@ +/*++ +/* NAME +/* fold_addr 3 +/* SUMMARY +/* address case folding +/* SYNOPSIS +/* #include <fold_addr.h> +/* +/* char *fold_addr(result, addr, flags) +/* VSTRING *result; +/* const char *addr; +/* int flags; +/* DESCRIPTION +/* fold_addr() case folds an address according to the options +/* specified with \fIflags\fR. The result value is the output +/* address. +/* +/* Arguments +/* .IP result +/* Result buffer with the output address. Note: casefolding +/* may change the string length. +/* .IP addr +/* Null-terminated read-only string with the input address. +/* .IP flags +/* Zero or the bit-wise OR of: +/* .RS +/* .IP FOLD_ADDR_USER +/* Case fold the address local part. +/* .IP FOLD_ADDR_HOST +/* Case fold the address domain part. +/* .IP FOLD_ADDR_ALL +/* Alias for (FOLD_ADDR_USER | FOLD_ADDR_HOST). +/* .RE +/* SEE ALSO +/* msg(3) diagnostics interface +/* casefold(3) casefold text +/* DIAGNOSTICS +/* Fatal errors: memory allocation problem. +/* LICENSE +/* .ad +/* .fi +/* The Secure Mailer license must be distributed with this software. +/* AUTHOR(S) +/* Wietse Venema +/* IBM T.J. Watson Research +/* P.O. Box 704 +/* Yorktown Heights, NY 10598, USA +/*--*/ + +/* System library. */ + +#include <sys_defs.h> +#include <string.h> + +/* Utility library. */ + +#include <stringops.h> + +/* Global library. */ + +#include <fold_addr.h> + +#define STR(x) vstring_str(x) + +/* fold_addr - case fold mail address */ + +char *fold_addr(VSTRING *result, const char *addr, int flags) +{ + char *cp; + + /* + * Fold the address as appropriate. + */ + switch (flags & FOLD_ADDR_ALL) { + case FOLD_ADDR_HOST: + if ((cp = strrchr(addr, '@')) != 0) { + cp += 1; + vstring_strncpy(result, addr, cp - addr); + casefold_append(result, cp); + break; + } + /* FALLTHROUGH */ + case 0: + vstring_strcpy(result, addr); + break; + case FOLD_ADDR_USER: + if ((cp = strrchr(addr, '@')) != 0) { + casefold_len(result, addr, cp - addr); + vstring_strcat(result, cp); + break; + } + /* FALLTHROUGH */ + case FOLD_ADDR_USER | FOLD_ADDR_HOST: + casefold(result, addr); + break; + } + return (STR(result)); +} + +#ifdef TEST +#include <stdlib.h> +#include <vstream.h> +#include <vstring_vstream.h> +#include <msg_vstream.h> +#include <argv.h> + +int main(int argc, char **argv) +{ + VSTRING *line_buffer = vstring_alloc(1); + VSTRING *fold_buffer = vstring_alloc(1); + ARGV *cmd; + char **args; + + msg_vstream_init(argv[0], VSTREAM_ERR); + util_utf8_enable = 1; + while (vstring_fgets_nonl(line_buffer, VSTREAM_IN)) { + vstream_printf("> %s\n", STR(line_buffer)); + cmd = argv_split(STR(line_buffer), CHARS_SPACE); + if (cmd->argc == 0 || cmd->argv[0][0] == '#') { + argv_free(cmd); + continue; + } + args = cmd->argv; + + /* + * Fold the host. + */ + if (strcmp(args[0], "host") == 0 && cmd->argc == 2) { + vstream_printf("\"%s\" -> \"%s\"\n", args[1], fold_addr(fold_buffer, + args[1], FOLD_ADDR_HOST)); + } + + /* + * Fold the user. + */ + else if (strcmp(args[0], "user") == 0 && cmd->argc == 2) { + vstream_printf("\"%s\" -> \"%s\"\n", args[1], fold_addr(fold_buffer, + args[1], FOLD_ADDR_USER)); + } + + /* + * Fold user and host. + */ + else if (strcmp(args[0], "all") == 0 && cmd->argc == 2) { + vstream_printf("\"%s\" -> \"%s\"\n", args[1], fold_addr(fold_buffer, + args[1], FOLD_ADDR_ALL)); + } + + /* + * Fold none. + */ + else if (strcmp(args[0], "none") == 0 && cmd->argc == 2) { + vstream_printf("\"%s\" -> \"%s\"\n", args[1], fold_addr(fold_buffer, + args[1], 0)); + } + + /* + * Usage. + */ + else { + vstream_printf("Usage: %s host <addr> | user <addr> | all <addr>\n", + argv[0]); + } + vstream_fflush(VSTREAM_OUT); + argv_free(cmd); + } + vstring_free(line_buffer); + vstring_free(fold_buffer); + exit(0); +} + +#endif /* TEST */ |