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authorEric S. Raymond <esr@thyrsus.com>2010-04-14 01:08:51 -0400
committerEric S. Raymond <esr@thyrsus.com>2010-04-14 01:08:51 -0400
commit12035915af9998df596f1cb3f9ee2406cc99f244 (patch)
tree460e5a9b421ae45da9e26ba5635fb5916019b9d0 /bsd-base64.c
parent2daef1ab8aafd0afe69cf80866a0dd390a269370 (diff)
downloadgpsd-12035915af9998df596f1cb3f9ee2406cc99f244.tar.gz
Reindent some utility modules. All regression tests pass.
Diffstat (limited to 'bsd-base64.c')
-rw-r--r--bsd-base64.c338
1 files changed, 170 insertions, 168 deletions
diff --git a/bsd-base64.c b/bsd-base64.c
index 90fbe64f..3ff88abe 100644
--- a/bsd-base64.c
+++ b/bsd-base64.c
@@ -56,7 +56,7 @@
#define Assert(Cond) if (!(Cond)) abort()
static const char Base64[] =
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
static const char Pad64 = '=';
/* (From RFC1521 and draft-ietf-dnssec-secext-03.txt)
@@ -124,65 +124,67 @@ static const char Pad64 = '=';
/*@ +matchanyintegral -type @*/
int
-b64_ntop(unsigned char const *src, size_t srclength, char *target, size_t targsize)
+b64_ntop(unsigned char const *src, size_t srclength, char *target,
+ size_t targsize)
{
- size_t datalength = 0;
- unsigned char input[3];
- unsigned char output[4];
- size_t i;
-
- while (2 < srclength) {
- input[0] = *src++;
- input[1] = *src++;
- input[2] = *src++;
- srclength -= 3;
-
- output[0] = input[0] >> 2;
- output[1] = ((input[0] & 0x03) << 4) + (input[1] >> 4);
- output[2] = ((input[1] & 0x0f) << 2) + (input[2] >> 6);
- output[3] = input[2] & 0x3f;
- Assert(output[0] < 64);
- Assert(output[1] < 64);
- Assert(output[2] < 64);
- Assert(output[3] < 64);
-
- if (datalength + 4 > targsize)
- return (-1);
- target[datalength++] = Base64[output[0]];
- target[datalength++] = Base64[output[1]];
- target[datalength++] = Base64[output[2]];
- target[datalength++] = Base64[output[3]];
- }
-
- /* Now we worry about padding. */
- if (0 != srclength) {
- /* Get what's left. */
- input[0] = input[1] = input[2] = '\0';
- for (i = 0; i < srclength; i++)
- input[i] = *src++;
-
- output[0] = input[0] >> 2;
- output[1] = ((input[0] & 0x03) << 4) + (input[1] >> 4);
- output[2] = ((input[1] & 0x0f) << 2) + (input[2] >> 6);
- Assert(output[0] < 64);
- Assert(output[1] < 64);
- Assert(output[2] < 64);
-
- if (datalength + 4 > targsize)
- return (-1);
- target[datalength++] = Base64[output[0]];
- target[datalength++] = Base64[output[1]];
- if (srclength == 1)
- target[datalength++] = Pad64;
- else
- target[datalength++] = Base64[output[2]];
- target[datalength++] = Pad64;
- }
- if (datalength >= targsize)
- return (-1);
- target[datalength] = '\0'; /* Returned value doesn't count \0. */
- return (datalength);
+ size_t datalength = 0;
+ unsigned char input[3];
+ unsigned char output[4];
+ size_t i;
+
+ while (2 < srclength) {
+ input[0] = *src++;
+ input[1] = *src++;
+ input[2] = *src++;
+ srclength -= 3;
+
+ output[0] = input[0] >> 2;
+ output[1] = ((input[0] & 0x03) << 4) + (input[1] >> 4);
+ output[2] = ((input[1] & 0x0f) << 2) + (input[2] >> 6);
+ output[3] = input[2] & 0x3f;
+ Assert(output[0] < 64);
+ Assert(output[1] < 64);
+ Assert(output[2] < 64);
+ Assert(output[3] < 64);
+
+ if (datalength + 4 > targsize)
+ return (-1);
+ target[datalength++] = Base64[output[0]];
+ target[datalength++] = Base64[output[1]];
+ target[datalength++] = Base64[output[2]];
+ target[datalength++] = Base64[output[3]];
+ }
+
+ /* Now we worry about padding. */
+ if (0 != srclength) {
+ /* Get what's left. */
+ input[0] = input[1] = input[2] = '\0';
+ for (i = 0; i < srclength; i++)
+ input[i] = *src++;
+
+ output[0] = input[0] >> 2;
+ output[1] = ((input[0] & 0x03) << 4) + (input[1] >> 4);
+ output[2] = ((input[1] & 0x0f) << 2) + (input[2] >> 6);
+ Assert(output[0] < 64);
+ Assert(output[1] < 64);
+ Assert(output[2] < 64);
+
+ if (datalength + 4 > targsize)
+ return (-1);
+ target[datalength++] = Base64[output[0]];
+ target[datalength++] = Base64[output[1]];
+ if (srclength == 1)
+ target[datalength++] = Pad64;
+ else
+ target[datalength++] = Base64[output[2]];
+ target[datalength++] = Pad64;
+ }
+ if (datalength >= targsize)
+ return (-1);
+ target[datalength] = '\0'; /* Returned value doesn't count \0. */
+ return (datalength);
}
+
/*@ -matchanyintegral +type @*/
/* skips all whitespace anywhere.
@@ -192,122 +194,122 @@ b64_ntop(unsigned char const *src, size_t srclength, char *target, size_t targsi
*/
/*@ +matchanyintegral +charint @*/
-int
-b64_pton(char const *src, unsigned char *target, size_t targsize)
+int b64_pton(char const *src, unsigned char *target, size_t targsize)
{
- size_t tarindex;
- int state, ch;
- char *pos;
-
- state = 0;
- tarindex = 0;
-
- while ((ch = *src++) != '\0') {
- if (isspace(ch)) /* Skip whitespace anywhere. */
- continue;
-
- if (ch == Pad64)
- break;
-
- if ((pos = strchr(Base64, ch)) == NULL) /* A non-base64 character. */
- return (-1);
-
- switch (state) {
- case 0:
- if (target) {
- if (tarindex >= targsize)
- return (-1);
- target[tarindex] = (pos - Base64) << 2;
- }
- state = 1;
- break;
- case 1:
- if (target) {
- if (tarindex + 1 >= targsize)
- return (-1);
- target[tarindex] |= (pos - Base64) >> 4;
- target[tarindex+1] = ((pos - Base64) & 0x0f)
- << 4 ;
- }
- tarindex++;
- state = 2;
- break;
- case 2:
- if (target) {
- if (tarindex + 1 >= targsize)
- return (-1);
- target[tarindex] |= (pos - Base64) >> 2;
- target[tarindex+1] = ((pos - Base64) & 0x03)
- << 6;
- }
- tarindex++;
- state = 3;
- break;
- case 3:
- if (target) {
- if (tarindex >= targsize)
- return (-1);
- target[tarindex] |= (pos - Base64);
- }
- tarindex++;
- state = 0;
- break;
- }
+ size_t tarindex;
+ int state, ch;
+ char *pos;
+
+ state = 0;
+ tarindex = 0;
+
+ while ((ch = *src++) != '\0') {
+ if (isspace(ch)) /* Skip whitespace anywhere. */
+ continue;
+
+ if (ch == Pad64)
+ break;
+
+ if ((pos = strchr(Base64, ch)) == NULL) /* A non-base64 character. */
+ return (-1);
+
+ switch (state) {
+ case 0:
+ if (target) {
+ if (tarindex >= targsize)
+ return (-1);
+ target[tarindex] = (pos - Base64) << 2;
+ }
+ state = 1;
+ break;
+ case 1:
+ if (target) {
+ if (tarindex + 1 >= targsize)
+ return (-1);
+ target[tarindex] |= (pos - Base64) >> 4;
+ target[tarindex + 1] = ((pos - Base64) & 0x0f)
+ << 4;
+ }
+ tarindex++;
+ state = 2;
+ break;
+ case 2:
+ if (target) {
+ if (tarindex + 1 >= targsize)
+ return (-1);
+ target[tarindex] |= (pos - Base64) >> 2;
+ target[tarindex + 1] = ((pos - Base64) & 0x03)
+ << 6;
+ }
+ tarindex++;
+ state = 3;
+ break;
+ case 3:
+ if (target) {
+ if (tarindex >= targsize)
+ return (-1);
+ target[tarindex] |= (pos - Base64);
+ }
+ tarindex++;
+ state = 0;
+ break;
}
-
+ }
+
+ /*
+ * We are done decoding Base-64 chars. Let's see if we ended
+ * on a byte boundary, and/or with erroneous trailing characters.
+ */
+
+ if (ch == Pad64) { /* We got a pad char. */
+ ch = *src++; /* Skip it, get next. */
+ switch (state) {
+ case 0: /* Invalid = in first position */
+ case 1: /* Invalid = in second position */
+ return (-1);
+
+ case 2: /* Valid, means one byte of info */
+ /* Skip any number of spaces. */
+ for (; ch != '\0'; ch = *src++)
+ if (!isspace(ch))
+ break;
+ /* Make sure there is another trailing = sign. */
+ if (ch != Pad64)
+ return (-1);
+ ch = *src++; /* Skip the = */
+ /* Fall through to "single trailing =" case. */
+ /* FALLTHROUGH */
+ /*@ -casebreak @*/
+ case 3: /* Valid, means two bytes of info */
+ /*
+ * We know this char is an =. Is there anything but
+ * whitespace after it?
+ */
+ for (; ch != '\0'; ch = *src++)
+ if (!isspace(ch))
+ return (-1);
+
+ /*
+ * Now make sure for cases 2 and 3 that the "extra"
+ * bits that slopped past the last full byte were
+ * zeros. If we don't check them, they become a
+ * subliminal channel.
+ */
+ if (target != 0 && target[tarindex] != 0)
+ return (-1);
+ }
+ } else {
/*
- * We are done decoding Base-64 chars. Let's see if we ended
- * on a byte boundary, and/or with erroneous trailing characters.
+ * We ended by seeing the end of the string. Make sure we
+ * have no partial bytes lying around.
*/
+ if (state != 0)
+ return (-1);
+ }
- if (ch == Pad64) { /* We got a pad char. */
- ch = *src++; /* Skip it, get next. */
- switch (state) {
- case 0: /* Invalid = in first position */
- case 1: /* Invalid = in second position */
- return (-1);
-
- case 2: /* Valid, means one byte of info */
- /* Skip any number of spaces. */
- for (; ch != '\0'; ch = *src++)
- if (!isspace(ch))
- break;
- /* Make sure there is another trailing = sign. */
- if (ch != Pad64)
- return (-1);
- ch = *src++; /* Skip the = */
- /* Fall through to "single trailing =" case. */
- /* FALLTHROUGH */
- /*@ -casebreak @*/
- case 3: /* Valid, means two bytes of info */
- /*
- * We know this char is an =. Is there anything but
- * whitespace after it?
- */
- for (; ch != '\0'; ch = *src++)
- if (!isspace(ch))
- return (-1);
-
- /*
- * Now make sure for cases 2 and 3 that the "extra"
- * bits that slopped past the last full byte were
- * zeros. If we don't check them, they become a
- * subliminal channel.
- */
- if (target!=0 && target[tarindex] != 0)
- return (-1);
- }
- } else {
- /*
- * We ended by seeing the end of the string. Make sure we
- * have no partial bytes lying around.
- */
- if (state != 0)
- return (-1);
- }
-
- return (tarindex);
+ return (tarindex);
}
+
/*@ +matchanyintegral -charint @*/
#endif /* !defined(HAVE_B64_NTOP) && !defined(HAVE___B64_NTOP) */