Add more stuff
And break the API. All in the name of progress!
This commit is contained in:
parent
2b3bc18269
commit
f20218e73e
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@ -27,7 +27,7 @@ set (common_sources ${PROJECT_BINARY_DIR}/liberty-config.h)
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# Build some unit tests
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enable_testing ()
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foreach (name liberty)
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foreach (name liberty proto)
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add_executable (test-${name} tests/${name}.c ${common_sources})
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target_link_libraries (test-${name} ${common_libraries})
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add_test (test-${name} test-${name})
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10
README
10
README
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@ -2,13 +2,21 @@ liberty
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=======
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`liberty' is a pseudolibrary of all the common C code I have written for various
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projects. It can be thought of as a successor to my other C library, libxtnd.
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projects. I used to copy-paste large swaths of code with minimal changes to it
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and it slowly became awfully painful to synchronize. The project can be thought
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of as a successor to my other C library, libxtnd.
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You are supposed to import it as a git submodule and include the main source
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file directly everywhere you need it. Everything is declared "static". I have
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come to the conclusion that this style of C programming suits me the best, as it
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allows me to nearly forget about the mess that are header files.
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The API is intentionally unstable, which allows for easy refactoring.
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All development is done on Linux, but other POSIX-compatible operating systems
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should be supported as well. They have an extremely low priority, however, and
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I'm not testing them at all.
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License
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-------
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`liberty' is written by Přemysl Janouch <p.janouch@gmail.com>.
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File diff suppressed because it is too large
Load Diff
300
liberty.c
300
liberty.c
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@ -61,6 +61,7 @@
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#endif // ! NI_MAXSERV
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#ifdef LIBERTY_WANT_SSL
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#include <openssl/sha.h>
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#include <openssl/ssl.h>
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#include <openssl/err.h>
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#endif // LIBERTY_WANT_SSL
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@ -544,6 +545,42 @@ str_remove_slice (struct str *self, size_t start, size_t length)
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self->str = xrealloc (self->str, self->alloc >>= 2);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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static void
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str_pack_u8 (struct str *self, uint8_t x)
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{
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str_append_data (self, &x, 1);
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}
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static void
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str_pack_u16 (struct str *self, uint64_t x)
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{
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uint8_t tmp[2] = { x >> 8, x };
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str_append_data (self, tmp, sizeof tmp);
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}
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static void
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str_pack_u32 (struct str *self, uint32_t x)
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{
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uint32_t u = x;
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uint8_t tmp[4] = { u >> 24, u >> 16, u >> 8, u };
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str_append_data (self, tmp, sizeof tmp);
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}
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static void
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str_pack_u64 (struct str *self, uint64_t x)
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{
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uint8_t tmp[8] =
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{ x >> 56, x >> 48, x >> 40, x >> 32, x >> 24, x >> 16, x >> 8, x };
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str_append_data (self, tmp, sizeof tmp);
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}
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#define str_pack_i8(self, x) str_pack_u8 ((self), (uint8_t) (x))
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#define str_pack_i16(self, x) str_pack_u16 ((self), (uint16_t) (x))
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#define str_pack_i32(self, x) str_pack_u32 ((self), (uint32_t) (x))
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#define str_pack_i64(self, x) str_pack_u64 ((self), (uint64_t) (x))
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// --- Errors ------------------------------------------------------------------
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// Error reporting utilities. Inspired by GError, only much simpler.
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@ -1660,7 +1697,16 @@ msg_unpacker_u8 (struct msg_unpacker *self, uint8_t *value)
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}
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static bool
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msg_unpacker_i32 (struct msg_unpacker *self, int32_t *value)
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msg_unpacker_u16 (struct msg_unpacker *self, uint16_t *value)
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{
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UNPACKER_INT_BEGIN
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*value
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= (uint16_t) x[0] << 24 | (uint16_t) x[1] << 16;
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return true;
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}
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static bool
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msg_unpacker_u32 (struct msg_unpacker *self, uint32_t *value)
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{
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UNPACKER_INT_BEGIN
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*value
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@ -1681,10 +1727,22 @@ msg_unpacker_u64 (struct msg_unpacker *self, uint64_t *value)
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return true;
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}
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#define msg_unpacker_i8(self, value) \
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msg_unpacker_u8 ((self), (uint8_t *) (value))
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#define msg_unpacker_i16(self, value) \
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msg_unpacker_u16 ((self), (uint16_t *) (value))
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#define msg_unpacker_i32(self, value) \
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msg_unpacker_u32 ((self), (uint32_t *) (value))
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#define msg_unpacker_i64(self, value) \
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msg_unpacker_u64 ((self), (uint64_t *) (value))
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#undef UNPACKER_INT_BEGIN
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// --- Message packer and writer -----------------------------------------------
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// Use str_pack_*() or other methods to append to the internal buffer, then
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// flush it to get a nice frame. Handy for iovec.
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struct msg_writer
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{
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struct str buf; ///< Holds the message data
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@ -1698,28 +1756,6 @@ msg_writer_init (struct msg_writer *self)
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str_append_data (&self->buf, "\x00\x00\x00\x00" "\x00\x00\x00\x00", 8);
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}
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static void
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msg_writer_u8 (struct msg_writer *self, uint8_t x)
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{
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str_append_data (&self->buf, &x, 1);
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}
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static void
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msg_writer_i32 (struct msg_writer *self, int32_t x)
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{
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uint32_t u = x;
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uint8_t tmp[4] = { u >> 24, u >> 16, u >> 8, u };
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str_append_data (&self->buf, tmp, sizeof tmp);
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}
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static void
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msg_writer_u64 (struct msg_writer *self, uint64_t x)
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{
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uint8_t tmp[8] =
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{ x >> 56, x >> 48, x >> 40, x >> 32, x >> 24, x >> 16, x >> 8, x };
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str_append_data (&self->buf, tmp, sizeof tmp);
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}
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static void *
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msg_writer_flush (struct msg_writer *self, size_t *len)
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{
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@ -1733,6 +1769,220 @@ msg_writer_flush (struct msg_writer *self, size_t *len)
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return str_steal (&self->buf);
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}
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// --- ASCII -------------------------------------------------------------------
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static int
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tolower_ascii (int c)
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{
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return c >= 'A' && c <= 'Z' ? c + ('a' - 'A') : c;
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}
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static size_t
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tolower_ascii_strxfrm (char *dest, const char *src, size_t n)
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{
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size_t len = strlen (src);
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while (n-- && (*dest++ = tolower_ascii (*src++)))
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;
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return len;
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}
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static int
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strcasecmp_ascii (const char *a, const char *b)
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{
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int x;
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while (*a || *b)
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if ((x = tolower_ascii (*(const unsigned char *) a++)
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- tolower_ascii (*(const unsigned char *) b++)))
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return x;
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return 0;
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}
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static bool
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isspace_ascii (int c)
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{
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return c == '\f' || c == '\n' || c == '\r' || c == '\t' || c == '\v';
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}
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// --- UTF-8 -------------------------------------------------------------------
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/// Return a pointer to the next UTF-8 character, or NULL on error
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// TODO: decode the sequence while we're at it
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static const char *
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utf8_next (const char *s, size_t len)
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{
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// End of string, we go no further
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if (!len)
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return NULL;
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// In the middle of a character -> error
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const uint8_t *p = (const unsigned char *) s;
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if ((*p & 0xC0) == 0x80)
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return NULL;
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// Find out how long the sequence is
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unsigned mask = 0xC0;
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unsigned tail_len = 0;
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while ((*p & mask) == mask)
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{
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// Invalid start of sequence
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if (mask == 0xFE)
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return NULL;
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mask |= mask >> 1;
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tail_len++;
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}
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p++;
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// Check the rest of the sequence
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if (tail_len > --len)
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return NULL;
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while (tail_len--)
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if ((*p++ & 0xC0) != 0x80)
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return NULL;
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return (const char *) p;
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}
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/// Very rough UTF-8 validation, just makes sure codepoints can be iterated
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// TODO: also validate the codepoints
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static bool
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utf8_validate (const char *s, size_t len)
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{
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const char *next;
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while (len)
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{
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if (!(next = utf8_next (s, len)))
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return false;
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len -= next - s;
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s = next;
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}
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return true;
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}
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// --- Base 64 -----------------------------------------------------------------
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static uint8_t g_base64_table[256] =
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{
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 62, 64, 64, 64, 63,
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52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 64, 64, 64, 0, 64, 64,
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64, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
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15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 64, 64, 64, 64, 64,
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64, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
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41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 64, 64, 64, 64, 64,
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
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};
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static inline bool
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base64_decode_group (const char **s, bool ignore_ws, struct str *output)
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{
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uint8_t input[4];
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size_t loaded = 0;
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for (; loaded < 4; (*s)++)
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{
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if (!**s)
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return loaded == 0;
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if (!ignore_ws || !isspace_ascii (**s))
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input[loaded++] = **s;
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}
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size_t len = 3;
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if (input[0] == '=' || input[1] == '=')
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return false;
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if (input[2] == '=' && input[3] != '=')
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return false;
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if (input[2] == '=')
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len--;
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if (input[3] == '=')
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len--;
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uint8_t a = g_base64_table[input[0]];
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uint8_t b = g_base64_table[input[1]];
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uint8_t c = g_base64_table[input[2]];
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uint8_t d = g_base64_table[input[3]];
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if (((a | b) | (c | d)) & 0x40)
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return false;
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uint32_t block = a << 18 | b << 12 | c << 6 | d;
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switch (len)
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{
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case 1:
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str_append_c (output, block >> 16);
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break;
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case 2:
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str_append_c (output, block >> 16);
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str_append_c (output, block >> 8);
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break;
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case 3:
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str_append_c (output, block >> 16);
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str_append_c (output, block >> 8);
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str_append_c (output, block);
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}
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return true;
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}
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static bool
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base64_decode (const char *s, bool ignore_ws, struct str *output)
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{
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while (*s)
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if (!base64_decode_group (&s, ignore_ws, output))
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return false;
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return true;
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}
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static void
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base64_encode (const void *data, size_t len, struct str *output)
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{
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const char *alphabet =
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
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const uint8_t *p = data;
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size_t n_groups = len / 3;
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size_t tail = len - n_groups * 3;
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uint32_t group;
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for (; n_groups--; p += 3)
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{
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group = p[0] << 16 | p[1] << 8 | p[2];
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str_append_c (output, alphabet[(group >> 18) & 63]);
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str_append_c (output, alphabet[(group >> 12) & 63]);
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str_append_c (output, alphabet[(group >> 6) & 63]);
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str_append_c (output, alphabet[ group & 63]);
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}
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switch (tail)
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{
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case 2:
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group = p[0] << 16 | p[1] << 8;
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str_append_c (output, alphabet[(group >> 18) & 63]);
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str_append_c (output, alphabet[(group >> 12) & 63]);
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str_append_c (output, alphabet[(group >> 6) & 63]);
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str_append_c (output, '=');
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break;
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case 1:
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group = p[0] << 16;
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str_append_c (output, alphabet[(group >> 18) & 63]);
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str_append_c (output, alphabet[(group >> 12) & 63]);
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str_append_c (output, '=');
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str_append_c (output, '=');
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default:
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break;
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}
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}
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// --- Utilities ---------------------------------------------------------------
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static void
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@ -2575,3 +2825,7 @@ test_run (struct test *self)
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str_map_free (&self->blacklist);
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return 0;
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}
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// --- Protocol modules --------------------------------------------------------
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#include "liberty-proto.c"
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@ -236,21 +236,6 @@ test_error (void)
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// --- Hash map ----------------------------------------------------------------
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static int
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tolower_ascii (int c)
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{
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return c >= 'A' && c <= 'Z' ? c + ('a' - 'A') : c;
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}
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static size_t
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tolower_strxfrm (char *dest, const char *src, size_t n)
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{
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size_t len = strlen (src);
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while (n-- && (*dest++ = tolower_ascii (*src++)))
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;
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return len;
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}
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static void
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free_counter (void *data)
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{
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@ -280,7 +265,7 @@ test_str_map (void)
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// Put two reference counted objects in the map under case-insensitive keys
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struct str_map m;
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str_map_init (&m);
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m.key_xfrm = tolower_strxfrm;
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m.key_xfrm = tolower_ascii_strxfrm;
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m.free = free_counter;
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int *a = make_counter ();
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@ -323,6 +308,34 @@ test_str_map (void)
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free_counter (b);
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}
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static void
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test_utf8 (void)
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{
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const char valid [] = "2H₂ + O₂ ⇌ 2H₂O, R = 4.7 kΩ, ⌀ 200 mm";
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const char invalid[] = "\xf0\x90\x28\xbc";
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soft_assert ( utf8_validate (valid, sizeof valid));
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soft_assert (!utf8_validate (invalid, sizeof invalid));
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}
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static void
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test_base64 (void)
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{
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char data[65];
|
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for (size_t i = 0; i < N_ELEMENTS (data); i++)
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data[i] = i;
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struct str encoded; str_init (&encoded);
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struct str decoded; str_init (&decoded);
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base64_encode (data, sizeof data, &encoded);
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soft_assert (base64_decode (encoded.str, false, &decoded));
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soft_assert (decoded.len == sizeof data);
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soft_assert (!memcmp (decoded.str, data, sizeof data));
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str_free (&encoded);
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str_free (&decoded);
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}
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// --- Main --------------------------------------------------------------------
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int
|
||||
|
|
@ -338,6 +351,8 @@ main (int argc, char *argv[])
|
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test_add_simple (&test, "/str", NULL, test_str);
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test_add_simple (&test, "/error", NULL, test_error);
|
||||
test_add_simple (&test, "/str-map", NULL, test_str_map);
|
||||
test_add_simple (&test, "/utf-8", NULL, test_utf8);
|
||||
test_add_simple (&test, "/base64", NULL, test_base64);
|
||||
|
||||
// TODO: write tests for the rest of the library
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,167 @@
|
|||
/*
|
||||
* tests/proto.c
|
||||
*
|
||||
* Copyright (c) 2015, Přemysl Janouch <p.janouch@gmail.com>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Permission to use, copy, modify, and/or distribute this software for any
|
||||
* purpose with or without fee is hereby granted, provided that the above
|
||||
* copyright notice and this permission notice appear in all copies.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
||||
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
||||
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
|
||||
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
|
||||
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||
*
|
||||
*/
|
||||
|
||||
#define PROGRAM_NAME "test"
|
||||
#define PROGRAM_VERSION "0"
|
||||
|
||||
#define LIBERTY_WANT_SSL
|
||||
|
||||
#define LIBERTY_WANT_PROTO_IRC
|
||||
#define LIBERTY_WANT_PROTO_HTTP
|
||||
#define LIBERTY_WANT_PROTO_SCGI
|
||||
#define LIBERTY_WANT_PROTO_FASTCGI
|
||||
#define LIBERTY_WANT_PROTO_WS
|
||||
|
||||
#include "../liberty.c"
|
||||
|
||||
// --- Tests -------------------------------------------------------------------
|
||||
|
||||
static void
|
||||
test_http_parser (void)
|
||||
{
|
||||
struct str_map parameters;
|
||||
str_map_init (¶meters);
|
||||
parameters.key_xfrm = tolower_ascii_strxfrm;
|
||||
|
||||
char *type = NULL;
|
||||
char *subtype = NULL;
|
||||
soft_assert (http_parse_media_type ("TEXT/html; CHARset=\"utf\\-8\"",
|
||||
&type, &subtype, ¶meters));
|
||||
soft_assert (!strcasecmp_ascii (type, "text"));
|
||||
soft_assert (!strcasecmp_ascii (subtype, "html"));
|
||||
soft_assert (parameters.len == 1);
|
||||
soft_assert (!strcmp (str_map_find (¶meters, "charset"), "utf-8"));
|
||||
str_map_free (¶meters);
|
||||
|
||||
struct http_protocol *protocols;
|
||||
soft_assert (http_parse_upgrade ("websocket, HTTP/2.0, , ", &protocols));
|
||||
|
||||
soft_assert (!strcmp (protocols->name, "websocket"));
|
||||
soft_assert (!protocols->version);
|
||||
|
||||
soft_assert (!strcmp (protocols->next->name, "HTTP"));
|
||||
soft_assert (!strcmp (protocols->next->version, "2.0"));
|
||||
|
||||
soft_assert (!protocols->next->next);
|
||||
|
||||
LIST_FOR_EACH (struct http_protocol, iter, protocols)
|
||||
http_protocol_destroy (iter);
|
||||
}
|
||||
|
||||
static bool
|
||||
test_scgi_parser_on_headers_read (void *user_data)
|
||||
{
|
||||
struct scgi_parser *parser = user_data;
|
||||
soft_assert (parser->headers.len == 4);
|
||||
soft_assert (!strcmp (str_map_find (&parser->headers,
|
||||
"CONTENT_LENGTH"), "27"));
|
||||
soft_assert (!strcmp (str_map_find (&parser->headers,
|
||||
"SCGI"), "1"));
|
||||
soft_assert (!strcmp (str_map_find (&parser->headers,
|
||||
"REQUEST_METHOD"), "POST"));
|
||||
soft_assert (!strcmp (str_map_find (&parser->headers,
|
||||
"REQUEST_URI"), "/deepthought"));
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool
|
||||
test_scgi_parser_on_content (void *user_data, const void *data, size_t len)
|
||||
{
|
||||
(void) user_data;
|
||||
soft_assert (!strncmp (data, "What is the answer to life?", len));
|
||||
return true;
|
||||
}
|
||||
|
||||
static void
|
||||
test_scgi_parser (void)
|
||||
{
|
||||
struct scgi_parser parser;
|
||||
scgi_parser_init (&parser);
|
||||
parser.on_headers_read = test_scgi_parser_on_headers_read;
|
||||
parser.on_content = test_scgi_parser_on_content;
|
||||
parser.user_data = &parser;
|
||||
|
||||
// This is an example straight from the specification
|
||||
const char example[] =
|
||||
"70:"
|
||||
"CONTENT_LENGTH" "\0" "27" "\0"
|
||||
"SCGI" "\0" "1" "\0"
|
||||
"REQUEST_METHOD" "\0" "POST" "\0"
|
||||
"REQUEST_URI" "\0" "/deepthought" "\0"
|
||||
","
|
||||
"What is the answer to life?";
|
||||
|
||||
soft_assert (scgi_parser_push (&parser, example, sizeof example, NULL));
|
||||
scgi_parser_free (&parser);
|
||||
}
|
||||
|
||||
static bool
|
||||
test_websockets_on_frame_header (void *user_data, const struct ws_parser *self)
|
||||
{
|
||||
(void) user_data;
|
||||
soft_assert (self->is_fin);
|
||||
soft_assert (self->is_masked);
|
||||
soft_assert (self->opcode == WS_OPCODE_TEXT);
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool
|
||||
test_websockets_on_frame (void *user_data, const struct ws_parser *self)
|
||||
{
|
||||
(void) user_data;
|
||||
soft_assert (self->input.len == self->payload_len);
|
||||
soft_assert (!strncmp (self->input.str, "Hello", self->input.len));
|
||||
return true;
|
||||
}
|
||||
|
||||
static void
|
||||
test_websockets (void)
|
||||
{
|
||||
char *accept = ws_encode_response_key ("dGhlIHNhbXBsZSBub25jZQ==");
|
||||
soft_assert (!strcmp (accept, "s3pPLMBiTxaQ9kYGzzhZRbK+xOo="));
|
||||
free (accept);
|
||||
|
||||
struct ws_parser parser;
|
||||
ws_parser_init (&parser);
|
||||
parser.on_frame_header = test_websockets_on_frame_header;
|
||||
parser.on_frame = test_websockets_on_frame;
|
||||
parser.user_data = &parser;
|
||||
|
||||
const char frame[] = "\x81\x85\x37\xfa\x21\x3d\x7f\x9f\x4d\x51\x58";
|
||||
soft_assert (ws_parser_push (&parser, frame, sizeof frame - 1));
|
||||
ws_parser_free (&parser);
|
||||
}
|
||||
|
||||
// --- Main --------------------------------------------------------------------
|
||||
|
||||
int
|
||||
main (int argc, char *argv[])
|
||||
{
|
||||
struct test test;
|
||||
test_init (&test, argc, argv);
|
||||
|
||||
test_add_simple (&test, "/http-parser", NULL, test_http_parser);
|
||||
test_add_simple (&test, "/scgi-parser", NULL, test_scgi_parser);
|
||||
test_add_simple (&test, "/websockets", NULL, test_websockets);
|
||||
// TODO: test FastCGI
|
||||
// TODO: test IRC
|
||||
|
||||
return test_run (&test);
|
||||
}
|
||||
Loading…
Reference in New Issue