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-rw-r--r--innbbsd/str_decode.c295
1 files changed, 151 insertions, 144 deletions
diff --git a/innbbsd/str_decode.c b/innbbsd/str_decode.c
index 73ad5f64..38851527 100644
--- a/innbbsd/str_decode.c
+++ b/innbbsd/str_decode.c
@@ -1,9 +1,12 @@
-/* 使用方法大致如下: innbbsd 中
- 在 SUBJECT 從 news 讀進來後, 呼叫 str_decode_M3(SUBJECT) 就行了 */
+/*
+ * 使用方法大致如下: innbbsd 中 在 SUBJECT 從 news 讀進來後, 呼叫
+ * str_decode_M3(SUBJECT) 就行了
+ */
-/* bsd 底下使用要編譯時要加 -I/usr/local/include -L/usr/local/lib -liconv
- 並安裝 libiconv,
- 若真的沒有iconv就把底下的 #define USE_ICONV 1 刪了 */
+/*
+ * bsd 底下使用要編譯時要加 -I/usr/local/include -L/usr/local/lib -liconv
+ * 並安裝 libiconv, 若真的沒有iconv就把底下的 #define USE_ICONV 1 刪了
+ */
/*-------------------------------------------------------*/
/* lib/str_decode.c ( NTHU CS MapleBBS Ver 3.00 ) */
@@ -23,14 +26,17 @@
#include <string.h>
#define USE_ICONV 1
-/* bsd 底下使用要編譯時要加 -I/usr/local/include -L/usr/local/lib -liconv
- 若真的沒有iconv就把上面這行 #define 刪了 */
+/*
+ * bsd 底下使用要編譯時要加 -I/usr/local/include -L/usr/local/lib -liconv
+ * 若真的沒有iconv就把上面這行 #define 刪了
+ */
#ifdef USE_ICONV
#include <iconv.h>
#endif
-static int qp_code(int x)
+static int
+qp_code(int x)
{
if (x >= '0' && x <= '9')
return x - '0';
@@ -48,7 +54,8 @@ static int qp_code(int x)
/* ------------------------------------------------------------------ */
-static int base64_code(int x)
+static int
+base64_code(int x)
{
if (x >= 'A' && x <= 'Z')
return x - 'A';
@@ -68,132 +75,139 @@ static int base64_code(int x)
/* judge & decode QP / BASE64 */
/* ----------------------------------------------------- */
-static inline int isreturn(unsigned char c)
+static inline int
+isreturn(unsigned char c)
{
return c == '\r' || c == '\n';
}
-static inline int isspace(unsigned char c)
+static inline int
+isspace(unsigned char c)
{
return c == ' ' || c == '\t' || isreturn(c);
}
/* static inline */
-int mmdecode(unsigned char *src, unsigned char encode, unsigned char *dst)
+int
+mmdecode(unsigned char *src, unsigned char encode, unsigned char *dst)
{
/* Thor.980901: src和dst可相同, 但src 一定有?或\0結束 */
/* Thor.980901: 注意, decode出的結果不會自己加上 \0 */
- unsigned char *t = dst;
- int pattern = 0, bits = 0;
- encode |= 0x20; /* Thor: to lower */
- switch(encode)
- {
- case 'q': /* Thor: quoted-printable */
- while(*src && *src != '?') /* Thor: delimiter */
- { /* Thor.980901: 0 算是 delimiter */
- if(*src == '=')
- {
- int x = *++src, y = x ? *++src : 0;
- if(isreturn(x)) continue;
- if( (x = qp_code(x)) < 0 || ( y = qp_code(y)) < 0) return -1;
- *t++ = (x << 4) + y , src++;
- }
- else if(*src == '_')
- *t++ = ' ', src++;
-#if 0
- else if(!*src) /* Thor: no delimiter is not successful */
+ unsigned char *t = dst;
+ int pattern = 0, bits = 0;
+ encode |= 0x20; /* Thor: to lower */
+ switch (encode) {
+ case 'q': /* Thor: quoted-printable */
+ while (*src && *src != '?') { /* Thor: delimiter *//* Thor.980901:
+ * 0 算是 delimiter */
+ if (*src == '=') {
+ int x = *++src, y = x ? *++src : 0;
+ if (isreturn(x))
+ continue;
+ if ((x = qp_code(x)) < 0 || (y = qp_code(y)) < 0)
return -1;
+ *t++ = (x << 4) + y, src++;
+ } else if (*src == '_')
+ *t++ = ' ', src++;
+#if 0
+ else if (!*src) /* Thor: no delimiter is not successful */
+ return -1;
#endif
- else /* Thor: *src != '=' '_' */
- *t++ = *src++;
- }
- return t - dst;
- case 'b': /* Thor: base 64 */
- while(*src && *src != '?') /* Thor: delimiter */ /* Thor.980901: 0也算 */
- { /* Thor: pattern & bits are cleared outside */
- int x;
+ else /* Thor: *src != '=' '_' */
+ *t++ = *src++;
+ }
+ return t - dst;
+ case 'b': /* Thor: base 64 */
+ while (*src && *src != '?') { /* Thor: delimiter */
+ /*
+ * Thor.980901: 0也算 *//* Thor: pattern & bits are cleared
+ * outside
+ */
+ int x;
#if 0
- if (!*src) return -1; /* Thor: no delimiter is not successful */
+ if (!*src)
+ return -1; /* Thor: no delimiter is not successful */
#endif
- x = base64_code(*src++);
- if(x < 0) continue; /* Thor: ignore everything not in the base64,=,.. */
- pattern = (pattern << 6) | x;
- bits += 6; /* Thor: 1 code gains 6 bits */
- if(bits >= 8) /* Thor: enough to form a byte */
- {
- bits -= 8;
- *t++ = (pattern >> bits) & 0xff;
- }
+ x = base64_code(*src++);
+ if (x < 0)
+ continue; /* Thor: ignore everything not in the
+ * base64,=,.. */
+ pattern = (pattern << 6) | x;
+ bits += 6; /* Thor: 1 code gains 6 bits */
+ if (bits >= 8) { /* Thor: enough to form a byte */
+ bits -= 8;
+ *t++ = (pattern >> bits) & 0xff;
}
- return t - dst;
+ }
+ return t - dst;
}
return -1;
}
#ifdef USE_ICONV
-int str_iconv(
- const char *fromcode, /* charset of source string*/
- const char *tocode, /* charset of destination string */
- char *src, /* source string */
- int srclen, /* source string length */
- char *dst, /* destination string */
- int dstlen) /* destination string length */
-/* 這個函式會將一個字串 (src) 從 charset=fromcode 轉成 charset=tocode,
- srclen 是 src 的長度, dst 是輸出的buffer, dstlen 則指定了
- dst 的大小, 最後會補 '\0', 所以要留一個byte給'\0'.
- 如果遇到 src 中有非字集的字, 或是 src 中有未完整的 byte,
- 都會砍掉.
- */
-{
- iconv_t iconv_descriptor;
- int iconv_ret,dstlen_old;
+int
+str_iconv(
+ const char *fromcode, /* charset of source string */
+ const char *tocode, /* charset of destination string */
+ char *src, /* source string */
+ int srclen, /* source string length */
+ char *dst, /* destination string */
+ int dstlen)
+{ /* destination string length */
+ /*
+ * 這個函式會將一個字串 (src) 從 charset=fromcode 轉成 charset=tocode,
+ * srclen 是 src 的長度, dst 是輸出的buffer, dstlen 則指定了 dst 的大小,
+ * 最後會補 '\0', 所以要留一個byte給'\0'. 如果遇到 src 中有非字集的字,
+ * 或是 src 中有未完整的 byte, 都會砍掉.
+ */
+ iconv_t iconv_descriptor;
+ int iconv_ret, dstlen_old;
- dstlen--; /* keep space for '\0' */
+ dstlen--; /* keep space for '\0' */
dstlen_old = dstlen;
/* Open a descriptor for iconv */
iconv_descriptor = iconv_open(tocode, fromcode);
- if (iconv_descriptor == ((iconv_t)(-1)) ) /* if open fail */
- {
- strncpy(dst,src,dstlen);
+ if (iconv_descriptor == ((iconv_t) (-1))) { /* if open fail */
+ strncpy(dst, src, dstlen);
return dstlen;
}
-
/* Start translation */
- while (srclen > 0 && dstlen > 0)
- {
- iconv_ret = iconv(iconv_descriptor, (const char* *)&src, &srclen,
- &dst, &dstlen);
- if (iconv_ret != 0)
- {
- switch(errno)
- {
+ while (srclen > 0 && dstlen > 0) {
+ iconv_ret = iconv(iconv_descriptor, (const char **)&src, &srclen,
+ &dst, &dstlen);
+ if (iconv_ret != 0) {
+ switch (errno) {
/* invalid multibyte happened */
- case EILSEQ:
- /* forward that byte */
- *dst = *src;
- src++; srclen--;
- dst++; dstlen--;
- break;
- /* incomplete multibyte happened */
- case EINVAL:
- /* forward that byte (maybe wrong)*/
- *dst = *src;
- src++; srclen--;
- dst++; dstlen--;
- break;
- /* dst no rooms */
- case E2BIG:
- /* break out the while loop */
- srclen = 0;
- break;
+ case EILSEQ:
+ /* forward that byte */
+ *dst = *src;
+ src++;
+ srclen--;
+ dst++;
+ dstlen--;
+ break;
+ /* incomplete multibyte happened */
+ case EINVAL:
+ /* forward that byte (maybe wrong) */
+ *dst = *src;
+ src++;
+ srclen--;
+ dst++;
+ dstlen--;
+ break;
+ /* dst no rooms */
+ case E2BIG:
+ /* break out the while loop */
+ srclen = 0;
+ break;
}
}
}
*dst = '\0';
- /* close descriptor of iconv*/
+ /* close descriptor of iconv */
iconv_close(iconv_descriptor);
return (dstlen_old - dstlen);
@@ -201,78 +215,71 @@ int str_iconv(
#endif
-void str_decode_M3(unsigned char *str)
+void
+str_decode_M3(unsigned char *str)
{
- int adj;
- int i;
- unsigned char *src, *dst;
- unsigned char buf[512];
- unsigned char charset[512],dst1[512];
+ int adj;
+ int i;
+ unsigned char *src, *dst;
+ unsigned char buf[512];
+ unsigned char charset[512], dst1[512];
src = str;
dst = buf;
adj = 0;
- while (*src && (dst - buf) < sizeof(buf) - 1)
- {
- if (*src != '=')
- { /* Thor: not coded */
- unsigned char *tmp = src;
- while(adj && *tmp && isspace(*tmp)) tmp++;
- if(adj && *tmp=='=')
- { /* Thor: jump over space */
+ while (*src && (dst - buf) < sizeof(buf) - 1) {
+ if (*src != '=') { /* Thor: not coded */
+ unsigned char *tmp = src;
+ while (adj && *tmp && isspace(*tmp))
+ tmp++;
+ if (adj && *tmp == '=') { /* Thor: jump over space */
adj = 0;
src = tmp;
- }
- else
+ } else
*dst++ = *src++;
- /* continue;*/ /* Thor: take out */
- }
- else /* Thor: *src == '=' */
- {
- unsigned char *tmp = src + 1;
- if(*tmp == '?') /* Thor: =? coded */
- {
+ /* continue; *//* Thor: take out */
+ } else { /* Thor: *src == '=' */
+ unsigned char *tmp = src + 1;
+ if (*tmp == '?') { /* Thor: =? coded */
/* "=?%s?Q?" for QP, "=?%s?B?" for BASE64 */
- tmp ++;
- i=0;
- while(*tmp && *tmp != '?')
- {
- if (i+1<sizeof(charset))
- {
+ tmp++;
+ i = 0;
+ while (*tmp && *tmp != '?') {
+ if (i + 1 < sizeof(charset)) {
charset[i] = *tmp;
- charset[i+1]='\0';
+ charset[i + 1] = '\0';
i++;
}
tmp++;
}
- if(*tmp && tmp[1] && tmp[2]=='?') /* Thor: *tmp == '?' */
- {
+ if (*tmp && tmp[1] && tmp[2] == '?') { /* Thor: *tmp == '?' */
#ifdef USE_ICONV
- int i = mmdecode(tmp + 3, tmp[1], dst1);
- i = str_iconv(charset,"big5",dst1,i,dst,
- sizeof(buf)-((int)(dst-buf)) );
+ int i = mmdecode(tmp + 3, tmp[1], dst1);
+ i = str_iconv(charset, "big5", dst1, i, dst,
+ sizeof(buf) - ((int)(dst - buf)));
#else
- int i = mmdecode(tmp + 3, tmp[1], dst);
+ int i = mmdecode(tmp + 3, tmp[1], dst);
#endif
- if (i >= 0)
- {
- tmp += 3; /* Thor: decode's src */
+ if (i >= 0) {
+ tmp += 3; /* Thor: decode's src */
#if 0
- while(*tmp++ != '?'); /* Thor: no ? end, mmdecode -1 */
+ while (*tmp++ != '?'); /* Thor: no ? end, mmdecode
+ * -1 */
#endif
- while(*tmp && *tmp++ != '?'); /* Thor: no ? end, mmdecode -1 */
+ while (*tmp && *tmp++ != '?'); /* Thor: no ? end,
+ * mmdecode -1 */
/* Thor.980901: 0 也算 decode 結束 */
- if(*tmp == '=') tmp++;
- src = tmp; /* Thor: decode over */
+ if (*tmp == '=')
+ tmp++;
+ src = tmp; /* Thor: decode over */
dst += i;
- adj = 1; /* Thor: adjcent */
+ adj = 1;/* Thor: adjcent */
}
}
}
-
- while(src != tmp) /* Thor: not coded */
+ while (src != tmp) /* Thor: not coded */
*dst++ = *src++;
}
}
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