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damus-c: add bolt11 parser from CLN

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We'll need this for our lightning invoice view

Signed-off-by: William Casarin <jb55@jb55.com>
This commit is contained in:
William Casarin
2022-10-19 07:45:06 -07:00
parent c4206883f2
commit dbe1260b54
44 changed files with 8280 additions and 0 deletions
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43
damus-c/overflows.h Normal file
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#ifndef LIGHTNING_COMMON_OVERFLOWS_H
#define LIGHTNING_COMMON_OVERFLOWS_H
#include "config.h"
#include "short_types.h"
static inline bool add_overflows_size_t(uint64_t a, uint64_t b)
{
return (size_t)a != a || (size_t)b != b || (a + b) < (size_t)a;
}
static inline bool add_overflows_u64(uint64_t a, uint64_t b)
{
return (a + b) < a;
}
static inline bool mul_overflows_u64(uint64_t a, uint64_t b)
{
uint64_t ret;
if (a == 0)
return false;
ret = a * b;
return (ret / a != b);
}
static inline bool assign_overflow_u8(u8 *dst, uint64_t v)
{
*dst = v;
return *dst == v;
}
static inline bool assign_overflow_u16(u16 *dst, uint64_t v)
{
*dst = v;
return *dst == v;
}
static inline bool assign_overflow_u32(u32 *dst, uint64_t v)
{
*dst = v;
return *dst == v;
}
#endif /* LIGHTNING_COMMON_OVERFLOWS_H */