Mercurial > dovecot > core-2.2
view src/lib-mail/quoted-printable.c @ 12782:447bce266022
Updated copyright notices to include year 2011.
author | Timo Sirainen <tss@iki.fi> |
---|---|
date | Fri, 04 Mar 2011 20:54:29 +0200 |
parents | 615eef3139c2 |
children | ba770cba5598 |
line wrap: on
line source
/* Copyright (c) 2002-2011 Dovecot authors, see the included COPYING file */ #include "lib.h" #include "buffer.h" #include "hex-binary.h" #include "quoted-printable.h" #define QP_IS_TRAILING_SPACE(c) \ ((c) == ' ' || (c) == '\t') void quoted_printable_decode(const unsigned char *src, size_t src_size, size_t *src_pos_r, buffer_t *dest) { char hexbuf[3]; size_t src_pos, pos, next; hexbuf[2] = '\0'; next = 0; for (src_pos = 0; src_pos < src_size; src_pos++) { if (src[src_pos] != '=' && src[src_pos] != '\n') continue; if (src[src_pos] == '\n') { /* drop trailing whitespace */ pos = src_pos; if (pos > 0 && src[pos-1] == '\r') pos--; while (pos > 0 && QP_IS_TRAILING_SPACE(src[pos-1])) pos--; buffer_append(dest, src + next, pos - next); next = src_pos+1; buffer_append(dest, "\r\n", 2); continue; } /* '=' */ buffer_append(dest, src + next, src_pos - next); next = src_pos; if (src_pos+1 >= src_size) break; if (src[src_pos+1] == '\n') { /* =\n -> skip both */ src_pos++; next += 2; continue; } if (src_pos+2 >= src_size) break; if (src[src_pos+1] == '\r' && src[src_pos+2] == '\n') { /* =\r\n -> skip both */ src_pos += 2; next += 3; continue; } /* =<hex> */ hexbuf[0] = src[src_pos+1]; hexbuf[1] = src[src_pos+2]; if (hex_to_binary(hexbuf, dest) == 0) { src_pos += 2; next = src_pos + 1; } else { /* non-hex data, show as-is */ next = src_pos; } } if (src_pos == src_size) { /* add everything but trailing spaces */ if (src_pos > 0 && src[src_pos-1] == '\r') src_pos--; while (src_pos > 0 && QP_IS_TRAILING_SPACE(src[src_pos-1])) src_pos--; buffer_append(dest, src + next, src_pos - next); next = src_pos; } *src_pos_r = next; } void quoted_printable_q_decode(const unsigned char *src, size_t src_size, buffer_t *dest) { char hexbuf[3]; size_t src_pos, next; hexbuf[2] = '\0'; next = 0; for (src_pos = 0; src_pos < src_size; src_pos++) { if (src[src_pos] != '_' && src[src_pos] != '=') continue; buffer_append(dest, src + next, src_pos - next); next = src_pos; if (src[src_pos] == '_') { buffer_append_c(dest, ' '); next++; continue; } if (src_pos+2 >= src_size) break; /* =<hex> */ hexbuf[0] = src[src_pos+1]; hexbuf[1] = src[src_pos+2]; if (hex_to_binary(hexbuf, dest) == 0) { src_pos += 2; next = src_pos+1; } else { /* non-hex data, show as-is */ next = src_pos; } } buffer_append(dest, src + next, src_size - next); }