diff options
Diffstat (limited to 'config.c')
| -rw-r--r-- | config.c | 116 |
1 files changed, 83 insertions, 33 deletions
@@ -27,9 +27,9 @@ struct config_source { struct strbuf value; struct strbuf var; - int (*fgetc)(struct config_source *c); - int (*ungetc)(int c, struct config_source *conf); - long (*ftell)(struct config_source *c); + int (*do_fgetc)(struct config_source *c); + int (*do_ungetc)(int c, struct config_source *conf); + long (*do_ftell)(struct config_source *c); }; static struct config_source *cf; @@ -217,13 +217,13 @@ int git_config_from_parameters(config_fn_t fn, void *data) static int get_next_char(void) { - int c = cf->fgetc(cf); + int c = cf->do_fgetc(cf); if (c == '\r') { /* DOS like systems */ - c = cf->fgetc(cf); + c = cf->do_fgetc(cf); if (c != '\n') { - cf->ungetc(c, cf); + cf->do_ungetc(c, cf); c = '\r'; } } @@ -468,7 +468,7 @@ static int parse_unit_factor(const char *end, uintmax_t *val) return 0; } -static int git_parse_long(const char *value, long *ret) +static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max) { if (value && *value) { char *end; @@ -480,21 +480,25 @@ static int git_parse_long(const char *value, long *ret) val = strtoimax(value, &end, 0); if (errno == ERANGE) return 0; - if (!parse_unit_factor(end, &factor)) + if (!parse_unit_factor(end, &factor)) { + errno = EINVAL; return 0; + } uval = abs(val); uval *= factor; - if ((uval > maximum_signed_value_of_type(long)) || - (abs(val) > uval)) + if (uval > max || abs(val) > uval) { + errno = ERANGE; return 0; + } val *= factor; *ret = val; return 1; } + errno = EINVAL; return 0; } -int git_parse_ulong(const char *value, unsigned long *ret) +int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max) { if (value && *value) { char *end; @@ -506,29 +510,75 @@ int git_parse_ulong(const char *value, unsigned long *ret) if (errno == ERANGE) return 0; oldval = val; - if (!parse_unit_factor(end, &val)) + if (!parse_unit_factor(end, &val)) { + errno = EINVAL; return 0; - if ((val > maximum_unsigned_value_of_type(long)) || - (oldval > val)) + } + if (val > max || oldval > val) { + errno = ERANGE; return 0; + } *ret = val; return 1; } + errno = EINVAL; return 0; } -static void die_bad_config(const char *name) +static int git_parse_int(const char *value, int *ret) { + intmax_t tmp; + if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int))) + return 0; + *ret = tmp; + return 1; +} + +static int git_parse_int64(const char *value, int64_t *ret) +{ + intmax_t tmp; + if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int64_t))) + return 0; + *ret = tmp; + return 1; +} + +int git_parse_ulong(const char *value, unsigned long *ret) +{ + uintmax_t tmp; + if (!git_parse_unsigned(value, &tmp, maximum_unsigned_value_of_type(long))) + return 0; + *ret = tmp; + return 1; +} + +static void die_bad_number(const char *name, const char *value) +{ + const char *reason = errno == ERANGE ? + "out of range" : + "invalid unit"; + if (!value) + value = ""; + if (cf && cf->name) - die("bad config value for '%s' in %s", name, cf->name); - die("bad config value for '%s'", name); + die("bad numeric config value '%s' for '%s' in %s: %s", + value, name, cf->name, reason); + die("bad numeric config value '%s' for '%s': %s", value, name, reason); } int git_config_int(const char *name, const char *value) { - long ret = 0; - if (!git_parse_long(value, &ret)) - die_bad_config(name); + int ret; + if (!git_parse_int(value, &ret)) + die_bad_number(name, value); + return ret; +} + +int64_t git_config_int64(const char *name, const char *value) +{ + int64_t ret; + if (!git_parse_int64(value, &ret)) + die_bad_number(name, value); return ret; } @@ -536,7 +586,7 @@ unsigned long git_config_ulong(const char *name, const char *value) { unsigned long ret; if (!git_parse_ulong(value, &ret)) - die_bad_config(name); + die_bad_number(name, value); return ret; } @@ -559,10 +609,10 @@ static int git_config_maybe_bool_text(const char *name, const char *value) int git_config_maybe_bool(const char *name, const char *value) { - long v = git_config_maybe_bool_text(name, value); + int v = git_config_maybe_bool_text(name, value); if (0 <= v) return v; - if (git_parse_long(value, &v)) + if (git_parse_int(value, &v)) return !!v; return -1; } @@ -992,9 +1042,9 @@ int git_config_from_file(config_fn_t fn, const char *filename, void *data) top.u.file = f; top.name = filename; top.die_on_error = 1; - top.fgetc = config_file_fgetc; - top.ungetc = config_file_ungetc; - top.ftell = config_file_ftell; + top.do_fgetc = config_file_fgetc; + top.do_ungetc = config_file_ungetc; + top.do_ftell = config_file_ftell; ret = do_config_from(&top, fn, data); @@ -1013,9 +1063,9 @@ int git_config_from_buf(config_fn_t fn, const char *name, const char *buf, top.u.buf.pos = 0; top.name = name; top.die_on_error = 0; - top.fgetc = config_buf_fgetc; - top.ungetc = config_buf_ungetc; - top.ftell = config_buf_ftell; + top.do_fgetc = config_buf_fgetc; + top.do_ungetc = config_buf_ungetc; + top.do_ftell = config_buf_ftell; return do_config_from(&top, fn, data); } @@ -1196,7 +1246,7 @@ static int store_aux(const char *key, const char *value, void *cb) return 1; } - store.offset[store.seen] = cf->ftell(cf); + store.offset[store.seen] = cf->do_ftell(cf); store.seen++; } break; @@ -1223,19 +1273,19 @@ static int store_aux(const char *key, const char *value, void *cb) * Do not increment matches: this is no match, but we * just made sure we are in the desired section. */ - store.offset[store.seen] = cf->ftell(cf); + store.offset[store.seen] = cf->do_ftell(cf); /* fallthru */ case SECTION_END_SEEN: case START: if (matches(key, value)) { - store.offset[store.seen] = cf->ftell(cf); + store.offset[store.seen] = cf->do_ftell(cf); store.state = KEY_SEEN; store.seen++; } else { if (strrchr(key, '.') - key == store.baselen && !strncmp(key, store.key, store.baselen)) { store.state = SECTION_SEEN; - store.offset[store.seen] = cf->ftell(cf); + store.offset[store.seen] = cf->do_ftell(cf); } } } |